Having projections resembling the teeth of a comb; comblike.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "pectinate" in a sentence
"The term pectinate sulcate is employed on account of a series of small elevations on the ridges, giving them a pectinate, or comb-like, appearance."
"_Polypody_, many footed, by reason of the pectinate fronds."
"Spikes solitary; spikelets 1-flowered; first glume of the sessile spikelet pectinate 21."