A microscopic, roughly spherical aggregate of a mineral (especially pyrite) in sedimentary rock, typically occurring in a spheroidal cluster of such aggregates.
Origin
1960s. From framb- + -oid, on account of a supposed resemblance of a cluster under magnification to a raspberry.
Definition of framboid in US English:
framboid
nounˈframbɔɪd
Geology
A microscopic, roughly spherical aggregate of a mineral (especially pyrite) in sedimentary rock, typically occurring in a spheroidal cluster of such aggregates.
Origin
1960s. From framb- + -oid, on account of a supposed resemblance of a cluster under magnification to a raspberry.