Definitions

1. adjective

relating to or resembling actinolite, a type of amphibole mineral

“The geologist studied the actinolitic crystals that formed in the metamorphic rock.”

2. adjective

characterized by or resembling the structure of actinolite, typically in having a fibrous or needle-like form

“The actinolitic texture of the mineral was evident under the microscope.”

3. noun

a type of metamorphic rock that contains actinolite or other actinolitic minerals

“The geologist examined the actinolitic rock formation in the mountain range.”

4. noun

a mineral or rock that has a composition or structure resembling that of actinolite

“The collection included a rare actinolitic mineral specimen.”