(geology) a fragment of rock that was broken from a larger rock or rock unit.

plural of clast

something that breaks or destroys.

(genetics) capable of causing damage to chromosomes

Made up of parts that are easily removable. / (geology, of rock) Made from fragments of pre-existing rocks.

(geology) A rock made from fragments of pre-existing rocks.

(cytology)The process resulting in additions, deletions, or rearrangements of parts of the chromosomes that are detectable by light microscopy.

(genetics) Any agent that causes breaks in chromosomes

plural of clastogen

(biochemistry) Any of a class of cytokines derived from osteoclasts.