ortho- en · X
Pronunciation
- (US) audio
- /oɹˈθɑ-/ (General-American)
- /ɔː.θə-/ (Received-Pronunciation)
- /ɔːˈθɒ-/ (Received-Pronunciation)
- /oɹ.θə-/ (General-American)
Etymology
Etymology tree Proto-Indo-European *h₃er- Proto-Indo-European *dʰeh₁- Proto-Indo-European *-eti Proto-Indo-European *-dʰh₁eti Proto-Indo-European *-dʰeti Proto-Indo-European *h₃érdʰeti? Proto-Indo-European *h₃erdʰ-der. Proto-Hellenic *ortʰwós Ancient Greek ὀρθός (orthós)lbor. English ortho- Learned borrowing from Ancient Greek ὀρθός (orthós).
Meanings
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(morpheme) Right angle, perpendicular.
In this sense, it is the angle that is "right" or straight rather than the line; orthogon is a right-angle triangle, orthocentric is a tetrahedron where all three pairs of opposite edges are perpendicular, orthoclastic is a crystal whose cleavage planes are at right angles.
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(morpheme) Proper, righteous, pure.
E.g., orthorexia is an unhealthy fixation with healthy or righteous eating, an orthotaxon is a true taxon based biological relationships rather than form, orthology is speech which is proper, orthoquartzite is very pure quartz sandstone.
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(morpheme) To correct or fix.
E.g., orthophotography is the geometrical correction of aerial photographs, orthoptics is the treatment of muscular irregularities of the eye, orthodontics is the correcting of misaligned teeth.
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(morpheme) Same, from the same.
E.g., An orthocousin, unlike a cross-cousin, is on the same side of the family; orthogamy is when a plant's ovules are fertilized by pollen from the same plant; orthochronous is a transformation which preserves the direction of time.
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(morpheme) Normal, ordinary.
E.g., orthocclusion is normal occlusion, orthodromic is when neurological impulses are passed in the normal direction, orthogravitropism is the ordinary effect of gravity on plants
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(morpheme) Straight in form.
E.g., orthoconic is a mollusc shell that is straight rather than spiraled, orthodentin is dentin composed of straight tubes, orthognathous is straight-jawed. .
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(morpheme) Orthorhombic crystal structure.
E.g., orthochrysotile is an orthorhombic chrysotile, orthopyroxene is a pyroxene that forms orthorhombic crystals, orthohexagonal is having orthorhombic hexagonal symmetry.
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(morpheme) In isomeric benzene derivatives, having the two substituents in adjacent (1,2) positions (compare meta- and para-).
E.g., orthophenylene, orthosubstitution, orthocleavage.
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(morpheme) Having an extra proportion of water.
E.g., orthophosphate, orthosilicate, orthoferrite.
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(morpheme) Independent, separate.
E.g., orthogonal as in statistically independent, orthopair is a pair of disjoint subsets, orthogonal in the sense of two aspects of a software problem are able to be treated separately.
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(morpheme) Original, primary.
E.g., orthonasal is the first direction from which olfaction happens; orthosteric is the original and unmodulated binding site; orthotone is when a speaker retains the accent.
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(morpheme) Parallel lines or columns.
E.g., orthostyle is a series of columns in architecture, an ortholinear keyboard has the keys aligned in straight columns, an orthographic projection has its rays parallel.
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(morpheme) Of any molecule of the form X₂ in which the two nuclei have parallel spin.
E.g., orthopositronium, orthohelium, orthoquarkonium.
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(morpheme) Orthopaedics.
E.g., orthogeriatrics is the combination of orthopaedics and geriatrics, orthosurgeon is an orthopaedic surgeon, orthoroentgenography is orthopedic roentgenography.
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(morpheme) Vertical or upright in movement.
E.g., orthotropic is to grow vertically (up or down), orthostasis describes the state of the human body in a standing position, orthograde is walking or standing in that position.
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(morpheme) Igneous.
E.g., orthogneiss is a gneiss derived from igneous, rather than sedimentary (paragneiss); orthoamphibolite, orthocumulate.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| orth- | alternative, before-vowel | lexicographic |
Deriveds
orthomegodont (terms derived from parallel) · orthostyle (terms derived from parallel) · orthonitrate (terms derived from inorganic chemistry) · orthosurgery (terms derived from orthopaedics) · orthodrome (terms derived from right-angle) · orthogneiss (terms derived from igneous) · orthopinacoid (terms derived from orthorhombic) · orthodontics (terms derived from correcting) · orthographic (terms derived from parallel) · orthoborate (terms derived from inorganic chemistry) · orthoquartzite (terms derived from pure) · orthonormalization (terms derived from independent) · anorthominasragrite (terms derived from same) · orthostereoscopy (terms derived from pure) · orthopathy (terms derived from righteous) · orthotope (terms derived from right-angle) · orthophemistic (terms derived from normal) · orthocarbonate (terms derived from organic chemistry) · orthokeratology (terms derived from correcting) · orthoexciton (terms derived from parallel spin) · orthophosphoric (terms derived from normal) · orthoaluminate (terms derived from inorganic chemistry) · orthosomatic (terms derived from straight) · orthobiologic (terms derived from correcting) · orthosexuality (terms derived from righteous) · orthopedagogy (terms derived from correcting) · orthopositronium (terms derived from parallel spin) · orthohedron (terms derived from right-angle) · orthocephalic (terms derived from normal) · orthogonal (terms derived from right-angle) · orthograde (terms derived from upright) · orthoselection (terms derived from righteous) · orthochoanitic (terms derived from straight) · orthoslice (terms derived from right-angle) · orthophoto (terms derived from correcting) · ortholinear (terms derived from pure) · orthopsychology (terms derived from righteous) · orthochromatic (terms derived from same) · orthosteric (terms derived from original) · orthosubstitution (terms derived from form) · orthogamous (terms derived from same) · orthocomplement (terms derived from orthorhombic) · anorthoclase (terms derived from right-angle) · ortholinear (terms derived from parallel) · orthometry (terms derived from righteous) · orthoceratite (terms derived from straight) · orthopnoea (terms derived from upright) · orthosurgeon (terms derived from orthopaedics) · orthoscopy (terms derived from right-angle) · orthography (terms derived from right-angle) · orthosilicate (terms derived from orthorhombic) · orthofacial (terms derived from correcting) · orthophosphate (terms derived from inorganic chemistry) · orthophenylene (terms derived from form) · orthogrid (terms derived from right-angle) · orthography (terms derived from righteous) · orthoquarkonium (terms derived from parallel spin) · orthostereoscopic (terms derived from pure) · orthonym (terms derived from original) · orthochromatic (terms derived from righteous) · orthodome (terms derived from right-angle) · orthophthalic (terms derived from form) · orthomode (terms derived from right-angle) · orthogon (terms derived from right-angle) · orthobicupola (terms derived from parallel) · orthogravitropism (terms derived from normal) · orthopia (terms derived from normal) · orthoperiodic (terms derived from inorganic chemistry) · orthosymmetric (terms derived from same) · orthopyroxene (terms derived from orthorhombic) · orthorectification (terms derived from correcting) · orthoroentgenography (terms derived from orthopaedics) · orthogeosyncline (terms derived from original) · orthogenesis (terms derived from righteous) · orthocentral (terms derived from right-angle) · orthosexual (terms derived from righteous) · orthopinakiolite (terms derived from orthorhombic) · orthogamy (terms derived from same) · orthoferrite (terms derived from inorganic chemistry) · orthocumulate (terms derived from igneous) · orthometric (terms derived from right-angle) · orthoevolution (terms derived from righteous) · orthognathous (terms derived from straight) · orthophosphoric acid (terms derived from inorganic chemistry) · orthoformate (terms derived from organic chemistry) · pseudoorthorhombic (terms derived from right-angle) · orthopalinal (terms derived from straight) · orthodentin (terms derived from straight) · orthonasal (terms derived from original) · orthotropic (terms derived from upright) · orthology (terms derived from righteous) · orthorexia (terms derived from righteous) · orthochronous (terms derived from same) · orthogeriatric (terms derived from orthopaedics) · orthobenzoquinone (terms derived from form) · ortholinear (terms derived from correcting) · orthosilicate (terms derived from inorganic chemistry) · orthoconic (terms derived from straight) · orthotaxon (terms derived from righteous) · orthoacetate (terms derived from organic chemistry) · orthopsychiatry (terms derived from correcting) · orthorectify (terms derived from correcting) · orthosympathetic (terms derived from original) · orthoquinone (terms derived from form) · orthodromic (terms derived from normal) · orthometric (terms derived from correcting) · orthoester (terms derived from organic chemistry) · orthograft (terms derived from normal) · orthochess (terms derived from normal) · orthoclase (terms derived from right-angle) · orthorhombic (terms derived from right-angle) · orthosomnia (terms derived from righteous) · orthoradial (terms derived from original) · orthocclusion (terms derived from normal) · orthoacid (terms derived from inorganic chemistry) · orthogeriatrics (terms derived from orthopaedics) · orthophony (terms derived from righteous) · orthochrysotile (terms derived from orthorhombic) · orthohelium (terms derived from parallel spin) · orthomyxovirus (terms derived from straight) · orthopedia (terms derived from correcting) · orthocharmonium (terms derived from parallel spin) · orthogonal (terms derived from independent) · ortholinear (terms derived from right-angle) · orthocousin (terms derived from same) · orthoprax (terms derived from righteous) · orthomolecular (terms derived from righteous) · orthostasis (terms derived from upright) · orthonitric acid (terms derived from inorganic chemistry) · orthophotography (terms derived from correcting) · orthoarsenite (terms derived from inorganic chemistry) · orthogenic (terms derived from righteous) · orthographical (terms derived from righteous) · orthodiagonal (terms derived from independent) · orthoamphibolite (terms derived from igneous) · orthotone (terms derived from original) · orthology (terms derived from same) · orthopair (terms derived from independent) · orthonym (terms derived from righteous) · orthodata (terms derived from same) · orthophosphite (terms derived from inorganic chemistry) · orthofluvial (terms derived from parallel) · orthomodular (terms derived from independent) · orthography (terms derived from same) · orthoptics (terms derived from correcting) · orthohexagonal (terms derived from orthorhombic) · orthoselective (terms derived from form) · orthobenzoate (terms derived from organic chemistry) · orthoconglomerate (terms derived from orthorhombic) · orthoclastic (terms derived from right-angle) · orthocleavage (terms derived from form) · orthoperiodate (terms derived from inorganic chemistry) · orthocenter (terms derived from right-angle) · orthogroup (terms derived from same) · orthocentric (terms derived from right-angle) · orthohydrogen (terms derived from parallel spin) · orthoploid (terms derived from righteous) · orthoscopic (terms derived from pure) · orthodiagonal (terms derived from right-angle) · orthoselection (terms derived from same)
Synonyms
recti- · igneo- · normo- · eu- · proto- · cross- · para- · ipsi- · fix-