a. rare–1. [f. L. fuscus (see FUSCOUS) + -ESCENT.] Passing into a dark or dusky hue; ‘brownish; approaching to darkish brown in colour’ (Syd. Soc. Lex., 1885).
1881. Johnson, in Jrnl. Bot., No. 220. 113. Their colour is fuscescent.
