Of or pertaining to the Canadian province of British Columbia.

A native or inhabitant of British Columbia, Canada.

(mineralogy) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.

plural of columbite

(obsolete) A former name of niobium.

A US national holiday celebrated on the second Monday in October, for Christopher Columbus' arrival in the Americas.

(organic chemistry) The polyunsaturated fatty acid trans,cis,cis-octadeca-5,9,12-trienoic acid found in the seeds of the columbine plant

Of or pertaining to columbinic acid or its derivatives.

A pigeon house or dovecot.

Third-person singular simple present indicative form of columbary