botryoidal
/ˌbɒtrɪˈɔɪd(ə)l
/adjective
(Chiefly of minerals) having a shape reminiscent of a cluster of grapes.Accessory minerals include earthy aggregates of clay minerals and botryoidal or stalactitic manganese oxides....
- This is a late-formed mineral that occurs as thin botryoidal crusts with little visible crystal structure.
- It forms spherical clusters of tightly packed radiating crystals and botryoidal crusts.
Origin
Late 18th century: from Greek botruoeidēs (from botrus 'bunch of grapes') + -al.
- aluminum oxide
- aluminum smelter
- aluminum sulfate
- aluminum sulphate
- alumite
- alumium
- alumna
- alumni association
- alumniate
- alumni society
- alumnus
- alumocalcite
- alum ore
- a lump in the throat
- alum rock
- alum root
- Wolfenden Report
- Wolfe, Thomas
- Wolfe, Tom
- wolf fish
- wolfhound
- Wolf, Hugo
- wolfish
- wolfishly
- wolf-like