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Related to botryoidal: botryoidal tissue


 (bŏt′rē-oid′l) also bot·ry·oid (bŏt′rē-oid′)
Shaped like a bunch of grapes. Used especially of mineral formations: botryoidal hematite.

[From Greek botruoeidēs : botrus, bunch of grapes + -oeidēs, -oid.]

bot′ry·oi′dal·ly adv.


(ˌbɒtrɪˈɔɪdəl) ,




(of minerals, parts of plants, etc) shaped like a bunch of grapes
[C18: from Greek botruoeidēs, from botrus cluster of grapes; see -oid]


(ˌbɒ triˈɔɪd l)

adj. Mineral.
having the form of a bunch of grapes: botryoidal hematite.
[1810–20; < Greek botryoeid(ḗs) (bótry(s) bunch of grapes + -oeidēs -oid) + -al1]
bot`ry•oi′dal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.botryoidal - resembling a cluster of grapes in form
References in periodicals archive ?
The barite crystals of generation I are frequently found embedded by paragenetically later calcitic botryoidal crusts.
In addition, the critical nano-scale structural differences will be determined between abiologic artefacts such as carbon coatings on botryoidal quartz or adsorbed carbon on silica biomorphs and true microfossils in hydrothermal cherts.
Aluminosilicate spheres, probably fly ash, more typically occur as characteristic spherical forms in botryoidal aggregations sizes of 0.
On the right side, a botryoidal, purplish vascular tumor was seen over the soft palate and the posterior tonsillar pillar, as well as two lesions on the posterior pharyngeal wall (figure, A).
Some botryoidal accretions were also sampled to see if they could provide direct evidence of the complex interactions of plant and microbiological metabolites on the fate of the pigments.
One of the few examples is botryoidal white opal from Milford, Utah, USA (Johnson and Koivula, 1997).
La Quilda sank her shears into the hen's body, she singed the feathers, laughing; she felt around in the entrails until pulling out a yellow, nubbly, clustered, botryoidal lump of flesh.
Two highlights were botryoidal malachite from Schwaz, Tyrol, Austria, generously coating a 5 X 7-cm matrix, and metatorbernite crystals to 1 cm on a 4 X 5-cm matrix from the antique locality of Slavkov (German name: Schlaggenwald), Bohemia, Czech Republic.
It has a foot composed of a crust of lithified material (zone I) surrounding an interior of highly porous unlithified material with some botryoidal aragonite (zone II).
Horizontal laminae are mantled by botryoidal chalcedony, sometimes growing both up and down from the surface.
This suggestion is consistent with the work of Smith and Eggleton (1983) who examined 4 samples of botryoidal goethite which varied in silica content from zero to 1.
The surface of the crusts have a botryoidal morphology (Fig.