- A long and narrow crack in the earth that forms an opening is an example of a fissure.
- When two members of a group have a disagreement and split on an issue, this is an example of a fissure.
- a long, narrow, deep cleft or crack
- a dividing or breaking into parts
- Anat. a groove between lobes or parts of an organ, as in the brain
- Med. a break or ulceration where skin and mucous membrane join: anal fissure
Origin of fissureMiddle English from Old French from Classical Latin fissura from fissus: see fission
intransitive verb-·sured, -·sur·ing
- A long narrow opening; a crack or cleft.
- The process of splitting or separating; division.
- A separation into subgroups or factions; a schism.
- Anatomy A normal groove or furrow, as in the liver or brain, that divides an organ into lobes or parts.
- Medicine A break in the skin, usually where it joins a mucous membrane, producing a cracklike sore or ulcer.
intr. & tr.v.fis·sured, fis·sur·ing, fis·sures
Origin of fissureMiddle English cut from Old French from Latin fissūra from fissus split ; see fissi- .
(third-person singular simple present fissures, present participle fissuring, simple past and past participle fissured)
- To split forming fissures.
From Old French fissure, Latin fissura.