(nautical) In the merchant navy, the officer who is second in command to the captain, and whose primary duties include managing the maintenance and upkeep of the vessel.

of, or relating to facts only; literal, realistic / lacking emotion or colour / straightforward, blunt, frank; treating the situation as normal; not embarrassed, coy, or dramatic.

A social system in which the mother is head of household, having authority over men and children. / A system of government by females (particularly as a kind of polity).

Feces.

The branch of logic that focuses on the content of reasoning.

(chemistry, physics) a technique for maintaining reactive molecules in an inert material at low temperature for spectroscopic study

A sister of one's mother. / A sister-in-law of one's mother; the wife or ex-wife of a maternal uncle. / (imprecise) A similar great aunt, etc.

(law) In the law of civil procedure, the ability of a court to hear a case based on the authority granted to the court to hear that particular type of case.

Any solid or liquid in a finely subdivided state, especially when considered as an atmospheric pollutant.

A substance, natural or man-made, which is intrinsically dangerous or otherwise poses a safety hazard. Examples are materials which are explosive, poisonous, chemically active (including acids and other corrosives), radioactive, or biologically active (including human blood and other medical waste).