Bot., Zool., etc. [ad. mod.L. crēnātus, f. CRENA. Junius Nomenclator 1577 has ‘Folium crenatum, pinnatum, feuille crenée.’] Having the edge notched or toothed with rounded teeth; finely scalloped.
1794. Martyn, Rousseau’s Bot., xxii. 307. Cat-mint has the middle division of the lower lip [of the corolla] crenate.
1836. Todd, Cycl. Anat., I. 711/2. When these projections and notches are very fine, the shell is said to be crenate.
1870. Bentley, Bot., 152. When the teeth are rounded … the leaf is crenate.
b. In comb. = CRENATO-.
1870. Hooker, Stud. Flora, 129. Leaves … crenate-dentate. Ibid., 330. Leaves … shining, crenate-serrate, ciliate.
Hence Crenately adv.
1864. T. Moore, Brit. Ferns, 47. Lobes of the pinnæ … with … a crenately toothed margin.
