a pit, cavity, or depression, as in a bone.
Other definitions for fossa (2 of 2)
a forest-dwelling genetlike mammal, Cryptoprocta ferox, of the civet family, native to Madagascar, with a short coat of white, black, gray, or brown: now rare.
- Also called fossa cat .
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fossa in a sentence
Occasionally it would appear that the inflammation begins in the throat, and reaches the face through the nasal fossae.
There are large supratemporal fossae, bounded below by supratemporal arcades.
As regards the skull, the quadrate is large and fixed, and supratemporal and infratemporal fossae bounded by bone occur.
Supratemporal, infratemporal, and post-temporal fossae occur, but no interparietal foramen.
The supratemporal fossae are small, and open posteriorly, the lateral temporal fossae are very large.
British Dictionary definitions for fossa (1 of 2)
an anatomical depression, trench, or hollow area
British Dictionary definitions for fossa (2 of 2)
a large primitive catlike viverrine mammal, Cryptoprocta ferox, inhabiting the forests of Madagascar: order Carnivora (carnivores). It has thick reddish-brown fur and preys on lemurs, poultry, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012