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allantoid

[uh-lan-toid]
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adjective
  1. Also al·lan·toi·dal [al-uh n-toid-l] /ˌæl ənˈtɔɪd l/. allantoic.
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noun
  1. the allantois.
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Origin of allantoid

1625–35; < Greek allantoeidḗs, equivalent to allant- (stem of allâs sausage) + -oeidḗs -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for allantoid

allantoid

adjective
  1. relating to or resembling the allantois
  2. botany shaped like a sausage
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noun
  1. another name for allantois
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Derived Formsallantoidal (ˌælənˈtɔɪdəl), adjective

Word Origin

C17: from Greek allantoeidēs sausage-shaped, from allas sausage + -oid
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

allantoid in Medicine

allantoid

(ə-lăntoid′)
adj.
  1. Of or having an allantois.
  2. Shaped like a sausage.
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n.
  1. allantois