1. acicular - Adjective
2. acicular - Adjective Satellite
Needle-shaped; slender like a needle or bristle, as some leaves or crystals; also, having sharp points like needless.
Source: Webster's dictionaryActinolite is an important and common member of the monoclinic series, forming radiating groups of acicular crystals of a bright green or greyish-green color. Source: Internet
Also as tufts, parallel bundles, and sheaf-like clusters of fibrous to acicular crystals, and as white, finely granular porcelaneous and waxy globular aggregates. Source: Internet
It is a colorless to white mineral crystallizing in the monoclinic crystal system typically occurring as prismatic to acicular crystals or granular masses. Source: Internet
Rocks & Minerals (2010) 85-3:212 In the Silurian Lockport Group, Central and Western New York strontianite is observed in cavities in eastern Lockport, where it occurs as small white radiating sprays of acicular crystals. Source: Internet
Tectosilicates hatnote Natrolite is a mineral series in the zeolite group; this sample has a very prominent acicular crystal habit. Source: Internet