An electric field, in the form of a sail, used as a form of spacecraft propulsion

Synonym of know one's ass from a hole in the ground

Synonym of know one's ass from a hole in the ground

plural of president-elect

plural of President-elect

Acer negundo

Acer negundo, a North American maple.

(chiefly Scotland) An ancestor.

Viral DNA embedded within the genome of a non-virus organism which is left over from an ancestral infection which integrated viral DNA into the genomic heritage of the organism's ancestry.

A voting system.