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bicyclic

or bi·cy·cli·cal

[bahy-sahy-klik, -sik-lik or bahy-sahy-kli-kuh l, -sik-li-kuh l]
adjective
  1. consisting of or having two cycles or circles.
  2. Botany. in two whorls, as the stamens of a flower.
  3. pertaining to or resembling a bicycle.
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Origin of bicyclic

First recorded in 1875–80; bi-1 + cyclic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for bicyclic

bicyclic

bicyclical

adjective
  1. of, forming, or formed by two circles, cycles, etc
  2. (of stamens, petals, etc) arranged in two whorls
  3. (of a chemical compound) having atoms arranged in two rings fused together with at least two atoms common to each ringnaphthalene is bicyclic
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

bicyclic in Science

bicyclic

[bī-sīklĭk, -sĭklĭk]
  1. Relating to a compound having two closed rings. Naphthalene is a bicyclic compound.
  2. Composed of or arranged in two distinct whorls, as the petals of a flower.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.