botryoidal

American  

[bo-tree-oid-l] / ˌbɒ triˈɔɪd l /

Also botryoid,

adjective

Mineralogy.

1. having the form of a bunch of grapes.

   botryoidal hematite.

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botryoidal British  

/ ˌbɒtrɪˈɔɪdəl, -ˌəʊz, ˈbɒtrɪˌəʊs /

adjective

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

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botryoidal Scientific  

/ bŏt′rē-oid′l /

1. Shaped like a bunch of grapes. Certain minerals and parts of organisms can be botryoidal.

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Other Word Forms

• botryoidally adverb

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

A fibrous variety with a botryoidal or globular surface is known as botryolite.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9 "Dagupan" to "David" by Various

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

And he would also write on the blackboard any exceptionally difficult but grant-earning words, such as "empyreumatic" or "botryoidal."

From The New Machiavelli by Wells, H. G. (Herbert George)

In Captain King's collection are also specimens found on the beach at Port Macquarie, and in the bed of the Hastings River, of common serpentine, and of botryoidal magnesite, from veins in serpentine.

From Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 by King, Phillip Parker

He has a face of that rubicund, knobby type I have heard an indignant mineralogist speak of as botryoidal, and about it waves a quantity of disorderly blond hair.

From A Modern Utopia by Wells, H. G. (Herbert George)