[te-tram-er-uh s]
  1. consisting of or divided into four parts.
  2. Botany. (of flowers) having the parts of a whorl arranged in fours or multiples of four.

Origin of tetramerous

1820–30; < New Latin tetramerus < Greek tetramerḗs having four parts. See tetra-, -merous
Related formste·tram·er·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tetramerous

Historical Examples of tetramerous

British Dictionary definitions for tetramerous


  1. (esp of animals or plants) having or consisting of four parts
  2. (of certain flowers) having parts arranged in whorls of four members
Derived Formstetramerism, noun

Word Origin for tetramerous

C19: from New Latin tetramerus, from Greek tetramerēs
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

tetramerous in Science


  1. Having four similar segments or parts.
  2. Having flower parts, such as petals, sepals, and stamens, in sets of four.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.