dihydrogen en · NOUN
Pronunciation
- /ˌdaɪˈhaɪdɹəd͡ʒ(ə)n/ (Received-Pronunciation)
- (General-American) audio
- /ˌdaɪˈhaɪdɹəd͡ʒ(ə)n/ (General-American)
Etymology
Etymology tree English di- Proto-Indo-European *wed- Proto-Indo-European *-r̥ Proto-Indo-European *wódr̥ Proto-Hellenic *údōr Ancient Greek ῡ̆̔́δωρ (hū̆́dōr) Ancient Greek ὑδρο- (hudro-)lbor. French hydro- Proto-Indo-European *ǵenh₁- Proto-Indo-European *-os Proto-Indo-European *ǵénh₁os Proto-Hellenic *génos Ancient Greek γένος (génos) Proto-Indo-European *-os Proto-Indo-European *-ēs Proto-Hellenic *-ēs Ancient Greek -ης (-ēs) Ancient Greek -γενής (-genḗs)lbor. French -gène French hydrogènebor. English hydrogen English dihydrogen From di- + hydrogen.
Meanings
- (uncountable) The divalent radical formed from two separate hydrogen atoms or ions.
-
(modifying a noun, uncountable) Describing a dihydrogen bond.
The Invisible Killer Dihydrogen monoxide is colorless, odorless, tasteless, and kills uncounted thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there.
1995, John December, quoting Craig Jackson, The World Wide Web Unleashed, 2nd edition, Indianapolis, Ind.: Sams.net, →ISBN, page 450:
- (uncountable) The diatomic hydrogen molecule H₂.
Deriveds
dihydrogen monoxide · dihydrogen arsenate · calcium dihydrogen phosphate · dihydrogen oxide · dihydrogen phosphate