A Grammatical Dictionary of Botanical Latin

Canker (Eng.noun): cancer, gen. sg. canceris (s.m.III), nom. & acc. pl. canceres, dat. & abl. pl. canceribus, from an ancient root meaning to be hard; the Crab, sign of the zodiac; (in medicine) a malignant tumor, a cancer; a canker or excrescence on trees: ulcus,-eris (s.m.III), q.v., abl. sg. ulcere; see carcinoma,-atis (s.n.III).

Canker (Eng.noun) (> cancer, an ulcer), “a disease in deciduous-leaved trees, ascribed to Nectria ditissima, Tul., shown by malformed rind, with swollen cushion-like margin, and depressed center’ (Jackson).

A little canker or sore: ulcusculum,-i (s.n.II), abl. sg. ulcusculo: a little ulcer or sore.

Carcinoides,-is (s.f.III), q.v., abl.sg. carinoide (= Gk. karkinOdEs, cancerous disease) and carcinoma,-atis (s.n.III) (= Gk. karkinOma, cancerous ulcer) “have been used to denote ‘canker’ and kindred diseases” (Jackson); see carcinoma,-atis (s.n.III).