tr. & intr.v. com·pli·cat·ed, com·pli·cat·ing, com·pli·cates
1. To make or become complex or perplexing.
2. To twist or become twisted together.
1. Complex, intricate, and involved.
2. Biology Folded longitudinally one or several times, as certain leaves or the wings of some insects.
[Latin complicāre, complicāt-, to fold together : com-, com- + plicāre, to fold; see plek- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.