Meaning

noun the magnitude of something in a particular direction (especially length or width or height)

noun a construct whereby objects or individuals can be distinguished

noun one of three Cartesian coordinates that determine a position in space

originEtymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *d(w)is- Proto-Italic *dis- Latin dis- Proto-Indo-European *meh₁- Proto-Italic *mētis Latin mētior Latin dīmētior Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin dīmēnsiōder. English dimension Derived from Latin dīmēnsiō.

Etymology from Wiktionary, CC BY-SA 3.0