Dictionary
Words, grammatical forms and meanings linked to the ontology.
datagram en · NOUN
Pronunciation
Etymology
Etymology tree
Proto-Indo-European *deh₃-redup.
Proto-Indo-European *-ti
Proto-Indo-European *dédeh₃ti
Proto-Italic *didō
Latin dō
Latin datusnom.
Latin datumbor.
English data
Proto-Indo-European *gerbʰ-
Proto-Hellenic *grə́pʰō
Ancient Greek γρᾰ́φω (grắphō)
Proto-Indo-European *-mn̥
Proto-Hellenic *-mə
Ancient Greek -μᾰ (-mă)
Ancient Greek γράμμα (grámma)lbor.
English -gram
English datagram
From data + -gram.
Meanings
-
A packet of data passed across a network.
The pseudo header conceptually prefixed to the UDP header contains the source address, the destination address, the protocol, and the UDP length. This information gives protection against misrouted datagrams.
1980 August 28, Jon Postel, “User Datagram Protocol”, in RFC Editor, →ISSN, RFC 768:
Forms
Deriveds
datagramming · tinygram · User Datagram Protocol
Translations (3)
el δεδομενόγραμμα (networking) · fi datagrammi (networking) · fi tietosähke (networking)
datagram en · VERB
Pronunciation
Etymology
Etymology tree
Proto-Indo-European *deh₃-redup.
Proto-Indo-European *-ti
Proto-Indo-European *dédeh₃ti
Proto-Italic *didō
Latin dō
Latin datusnom.
Latin datumbor.
English data
Proto-Indo-European *gerbʰ-
Proto-Hellenic *grə́pʰō
Ancient Greek γρᾰ́φω (grắphō)
Proto-Indo-European *-mn̥
Proto-Hellenic *-mə
Ancient Greek -μᾰ (-mă)
Ancient Greek γράμμα (grámma)lbor.
English -gram
English datagram
From data + -gram.
Meanings
-
(empty-gloss, no-gloss, rare) (rare)
>* How does the dispatch station know where the trains are? Is it
>just by the engineer notifying them, or is it done by some computerized
>system in the track?
Varies. Most common is by track circuits, in which the train indicates occupancy of a "block" by shorting the rails together. This gets "datagrammed" to the CTC center. (short hand, simplified description).
1992 July 31, Dave Pierson, “Uploads to wuarchive.wustl.edu”, in rec.railroad (Usenet), archived from the original on 05 Jun 2025:the crowd mills about datagrammed packets flowing without words to say.
1999 October 30, Decklin Foster, “[haiku] nyc right about now.”, in alt.teens.poetry.and.stuff (Usenet), archived from the original on 05 Jun 2025:The Modifiable Data Base is a very nice system and is, generally, highly recommended* It is memory dependent and, once formated,^([sic]) (datagrammed) is not changeable.
1981 October, Alfred R. Dixon Jr., “Data Base Management”, in Terry Tufts, editor, The Harvest, volume 3, number 2, Arlington Heights, Ill.: Northern Illinois Apple Users Group, →OCLC, page 13, column 1:
Forms