a. Nat. Hist. [f. L. stigmat- STIGMA + -(I)FORM.] Having the form of a stigma (in sense 5 a, 5 c, or 6).
1843. Humphreys, Brit. Moths, I. 111. An ovate black stigmatiform mark.
1888. Henslow, Orig. Floral Struct., 292. The apex of the petal was green and stigmatiform.
