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

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

It is never found as crystals, but always as encrusting and botryoidal masses with a microcrystalline structure.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Native arsenic is usually found as granular or curvilaminar masses, with a reniform or botryoidal surface.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" by Various

At Arendal in Norway, the original locality for both the crystallized and botryoidal varieties, it is found in a bed of magnetite.

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

Write as explicit an account as you can of the absorbent action of a villus. Tabulate the alimentary secretions, and their action on the food. What is botryoidal tissue?

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