Search results for 'ID':

ID abbreviation 1 US state Idaho. Also written Id. 2 identification, or identity • ID card. 3 medicine infectious diseases. 4 medicine intradermal, or intradermally. Also written i.d.

id noun, psychoanal in Freudian theory: the part of the unconscious mind that is regarded as the source of primitive biological instincts and urges for survival and reproduction. Compare ego, superego.
ETYMOLOGY: 1920s: Latin, meaning 'it'.

id. abbreviation: idem.

I'd contraction 1 I had. 2 I would • I'd love to come.

-id¹ suffix, forming nouns, denoting 1 biol a member of a particular zoological or racial group • arachnid • hominid. 2 a member of a particular dynastic line • Fatimid. 3 astron a meteor that has come from a particular constellation • Perseid.
ETYMOLOGY: From scientific Latin family names ending in -idae, from Greek -ides son of ....

-id² suffix, forming nouns 1 technical used in the names of bodies, formations, particles, etc • hydatid. 2 bot used in the names of plants belonging to family whose scientific Latin name ends in -aceae • orchid. 3 used in the names of some classical epic poems based on a personal or place name • Aeneid.
ETYMOLOGY: From French -ide.

-ide and (especially US) -id chem suffix, forming nouns, denoting a compound of an element with some other element • chloride. Compare -ate¹, -ite.
ETYMOLOGY: First used in oxide (as a compound of oxygen).

idem (abbreviation id.) pronoun the same author, place, etc as previously mentioned. adverb in the same place as previously mentioned. Compare ibidem.
ETYMOLOGY: 14c: Latin, meaning 'the same'.