having the form of a bunch of grapes: botryoidal hematite.
Also bot·ry·oid, botryose.
Origin of botryoidal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
botryose (ˈbɒtrɪˌəʊs, -ˌəʊz)
(of minerals, parts of plants, etc) shaped like a bunch of grapes
Word Origin for botryoidal
C18: from Greek botruoeidēs, from botrus cluster of grapes; see -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
Having numerous rounded protuberances resembling a bunch of grapes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Shaped like a bunch of grapes. Certain minerals and parts of organisms can be botryoidal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.