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

The mineral also occurs as stalactitic or botryoidal masses with a fibrous structure, or in a massive, cellular or granular condition intermixed with calamine and clay.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

The network is partly formed out of pigmented cells which are excavated and join to form tubes, the so-called botryoidal tissue, not found among the Rhynchobdellidae at all.

From 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 Project Gutenberg