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botryoidal

American  
[bo-tree-oid-l] / ˌbɒ triˈɔɪd l /
Also botryoid,

adjective

Mineralogy.
  1. having the form of a bunch of grapes.

    botryoidal hematite.


botryoidal British  
/ ˌbɒtrɪˈɔɪdəl, -ˌəʊz, ˈbɒtrɪˌəʊs /

adjective

  1. (of minerals, parts of plants, etc) shaped like a bunch of grapes

"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

botryoidal Scientific  
/ bŏt′rē-oidl /
  1. Shaped like a bunch of grapes. Certain minerals and parts of organisms can be botryoidal.


Other Word Forms

Derived Forms

Etymology

Origin of botryoidal

1810–20; < Greek botryoeid ( ḗs ) shaped like a bunch of grapes ( bótry ( s ) bunch of grapes + -oeidēs -oid ) + -al 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Some of these implements are pecked or chipped, others are smooth—pebbles apparently chosen for their botryoidal shape, polished surface, or fancied resemblance to some animal or other form.

From Archeological Expedition to Arizona in 1895 Seventeenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1895-1896, Government Printing Office, Washington, 1898, pages 519-744 by Fewkes, Jesse Walter

The matrix of botryoidal tissue is a network of stretched and hollowed connective tissue cells-- it is not a secretion, as cartilage matrix appears to be.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

It generally occurs in stalactitic, reniform, or botryoidal shapes, of a white to gray, green, or brown color.

From The Gutenberg Webster's Unabridged Dictionary Section S by Project Gutenberg

Sometimes the travertin assumes precisely the botryoidal and mammillary forms, common to similar deposits in Auvergne, of a much older date; and, like them, it often scales off in thin, slightly undulating layers.

From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Lyell, Charles, Sir

These shells occur at Hartlepool and Sunderland, where the rock assumes an oolitic and botryoidal character.

From The Student's Elements of Geology by Lyell, Charles, Sir

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