ACUMINATE • FREE TRANSLATOR.ORG • Definition of Acuminate

... delicate and transparent. They probably want the outer lamina, or have it very thin, and consequently present no fenestrate spaces, and the front of the cell is beset (sometimes very sparingly) with more or less prominent, minute, acuminate papillae. On each side, sometimes on the anterior aspect, sometimes quite laterally, is a narrow elongated band or vitta, as it is here designated, from which the distinctive sectional appellation is derived. This band or stripe varies in width and proportionate length and position ...

— Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade • John MacGillivray