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

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

Its darkness varies a little, but the jet blackness of some of the fronds and of the botryoidal masses seems due to the translucency of the successive grey layers.

From Volcanic Islands by Darwin, Charles

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)

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)

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