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citrous

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cit⋅rus

[si-truhs] noun, plural -rus⋅es.
1. any small tree or spiny shrub of the genus Citrus, of the rue family, including the lemon, lime, orange, tangerine, grapefruit, citron, kumquat, and shaddock, widely cultivated for fruit or grown as an ornamental.
2. the tart-to-sweet, pulpy fruit of any of these trees or shrubs, having a characteristically smooth, shiny, stippled skin.
–adjective
3. Also, citrous. of or pertaining to such trees or shrubs, or their fruit.

Origin:
1815–25; < NL, L: citron tree
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

citrus 
1825, from Mod.L. genus name, from L. citron, name of a tree with lemon-like fruit, the first citrus fruit available in the West. The name, like the tree, is probably of Asiatic origin. But Klein traces it to Gk. kedros "cedar," and writes that the change of dr into tr shows that the word came from Greek into Latin through the medium of the Etruscans. Citric first recorded 1800.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: cit·rus
Pronunciation: 'si-tr&s
Function: noun
often attributive 1 capitalized : a genus of often thorny treesand shrubs of the rue family (Rutaceae) grown in warm regions for their edible fruit (as the orange, lemon, lime, kumquat, mandarin, or shaddock) with firm usually thick and pulpy flesh
2 plural citruses or citrus : any plant or fruit of the genus Citrus
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Science Dictionary
citrus   (sĭt'rəs)  Pronunciation Key 
  1. Any of various evergreen trees or shrubs bearing fruit with juicy flesh and a thick rind. Citrus trees are native to southern and southeast Asia but are grown in warm climates around the world. Many species have spines. The orange, lemon, lime, and grapefruit are citrus trees.

  2. The usually edible fruit of one of these trees or shrubs.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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