Etymology
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proximate (adj.)

1590s (implied in proximately), "closely neighboring; next, immediate, without intervention of a third," from Late Latin proximatus, past participle of proximare "to draw near, approach," from proximus "nearest, next; most direct; adjoining," figuratively "latest, most recent; next, following; most faithful," superlative of prope "near" (see propinquity). Meaning "coming next in a chain of causation" is by 1660s. Related: Proximately.

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Definitions of proximate

proximate (adj.)
closest in degree or order (space or time) especially in a chain of causes and effects;
news of his proximate arrival
interest in proximate rather than ultimate goals
proximate (adj.)
very close in space or time;
proximate houses
proximate words
From wordnet.princeton.edu