A nut designed not to require a wrench for tightening and loosening.

A beta blocker drug.

A recombinant methionyl human stem cell factor.

plural of Ancient Roman

A native or inhabitant of Ancient Rome.

Alternative letter-case form of ancient Roman

The state of being an ancestor.

plural of ancestorship

plural of ancient astronaut

(uncountable) The condition of being ancestral / (countable) The possible or actual ancestors of an individual or species