A virus used to assist in the replication of viral vectors

The ability to be helped or to provide help.

A city in Carbon County, Utah, United States, which got its name from the practice of the Denver & Rio Grande Railroad of attaching helper engines to trains there.

plural of helper T cell

Lacking a helper / Lacking helper T cells

(slang, euphemistic) A tranquilizer taken to reduce anxiety; meprobamate, diazepam.

Alternative spelling of help desk

Obsolete spelling of helpless

Obsolete spelling of helpful

A village and former civil parish, now in Brafferton and Helperby parish, Hambleton district, North Yorkshire, England (OS grid ref SE4369).