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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

natural object go
an object occurring naturally

rock, stone
a lump or mass of hard consolidated mineral matter

noun.object

17 Subcategories

achondrite go
a stony meteor lacking chondrules
bedrock go
solid unweathered rock lying beneath surface deposits of soil
boulder, bowlder go
a large smooth mass of rock detached from its place of origin
concretion, calculus go
a hard lump produced by the concretion of mineral salts
chondrite go
a rock of meteoric origin containing chondrules
clastic rock go
(geology) a rock composed of broken pieces of older rocks
crystal, crystallization go
a rock formed by the solidification of a substance
intrusion go
rock produced by an intrusive process
outcrop, outcropping, rock outcrop go
the part of a rock formation that appears above the surface of the surrounding land
pebble go
a small smooth rounded rock
petrifaction go
a rock created by petrifaction
sill go
(geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock
stepping stone go
a stone in a marsh or shallow water that can be stepped on in crossing
tor go
a prominent rock or pile of rocks on a hill
wall rock go
a rock immediately adjacent to a vein or fault
whinstone, whin go
any of various hard colored rocks (especially rocks consisting of chert or basalt)
xenolith go
(geology) a piece of rock of different origin from the igneous rock in which it is embedded