olemus
(2a) loogikas: loogikaavaldise komponent
Wiktionary:
13. (logic) the subject or the predicate of a proposition; one of the three component parts of a syllogism, each one of which is used twice
(2b) matemaatikas: funktsiooni rakendamist esitav notatsioonitarind, näiteks x²
Wiktionary:
12. (mathematics) any value (variable or constant) or expression separated from another term by a space or an appropriate character, in an overall expression or table

ülevaateid
https://en.wikipedia.org/wiki/Term_(logic)
https://en.wikipedia.org/wiki/Addition#addend