(US, military, nautical) A commissioned officer in the United States Navy, Coast Guard, NOAA Corps, or PHS Corps of a grade superior to a captain and junior to a rear admiral (upper half). A rear a...

The list of sources used or considered in preparing a work.

The state of being without a dog.

(taxonomy) A taxonomic category above family and below order (and its subdivisions). / (molecular biology) A large group of related proteins or other molecules.