fishworm
- n terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers
fission
- n reproduction of some unicellular organisms by division of the cell into two more or less equal parts
- n a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
fission bomb
- n a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
fissiparity
- n reproduction of some multicellular organisms by division, as in the case of some starfish
- n the tendency to break into parts
the fissiparity of religious sects
fissiped
- n terrestrial carnivores; having toes separated to the base: dogs; cats; bears; badgers; raccoons
fissiped mammal
- n terrestrial carnivores; having toes separated to the base: dogs; cats; bears; badgers; raccoons
fissipedia
- n in some classifications considered a suborder of Carnivora
fissure
- n a long narrow depression in a surface
- n a long narrow opening
- n (anatomy) a long narrow slit or groove that divides an organ into lobes
- v break into fissures or fine cracks