(archaic) One with a simple mind; a fool or idiot.

Alternative form of ultranatural

plural of natural historian

One who studies natural history.

(now archaic) The genitals. / (now rare) Someone's innate, untaught talents or skill.

A hypothetical alternative to the anthropic principle that attempts to explain the complexity of the universe

(immunology) Any cell that expresses cell surface receptors that deliver signals to either activate or inhibit a response as part of the innate immune system.

(Canada, politics, slang) The Liberal Party of Canada (LPC).

Timing sexual intercourse to avoid the time of ovulation (if pregnancy is not wanted) or to fall within that time (if pregnancy is desired).

Natural gas that has been cooled and compressed to liquid form for transport and storage.