The unconscious impulsive component of the personality in the Freudian psychoanalytic model.

(botany) Forming nouns from Latin or Greek roots, including certain plant names modelled on Latin sources. / (astronomy) Forming common names of meteors from their apparent constellation of origin.

(not productive except in zoology) of or pertaining to; appended to various foreign words to make an English adjective or noun form. Often added to words of Greek, sometimes Latin, origin.

(historical, often capitalized) The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months.

plural of ide

A freshwater fish of the family Cyprinidae, found across northern Europe and Asia, especially Leuciscus idus.

(biochemistry) Initialism of insulin-degrading enzyme. / (computing) Initialism of integrated development environment. / (electronics) Initialism of integrated drive electronics.

(UK politics) Initialism of Iain Duncan Smith.

(computing) Initialism of Ideographic Description Sequence. / (computing) Initialism of intrusion detection system. / (linguistics) Initialism of infant-directed speech.

Any of a group of related compounds - azide, polysaccharide, glycoside. / A binary compound - bromide, arsenide, palladide. / Any of a group of several elements - lanthanide.