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copulatory bursa[′käp·yə·lə‚tȯr·ē ′bər·sə]
A sac that receives the sperm during copulation in certain insects.
The caudal expansion of certain male nematodes that functions as a clasper during copulation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.