What does "proximate" mean?

Proximate: Nearest; next immediately preceding or following. "Proximate ancestors." J. S. Harford. The proximate natural causes of it [the deluge]. T. Burnet. Proximate analysis (Chem.), an analysis which determines the proximate principles of any substance, as contrasted with an ultimate analysis. -- Proximate cause. (a) A cause which immediately precedes and produces the effect, as distinguished from the remote, mediate, or predisposing cause. I. Watts. (b) That which in ordinary natural sequence produces a specific result, no independent disturbing agencies intervening. -- Proximate principle (Physiol. Chem.), one of a class of bodies existing ready formed in animal and vegetable tissues, and separable by chemical analysis, as albumin, sugar, collagen, fat, etc.