tractor

trac·tor

(trak'tŏr, tōr),

An instrument for exerting traction on an organ or structure.

[Mod. L. a drawer, see traction]

A popular term for a molecule—e.g., a carrier protein—that links to a poorly- or non-antigenic molecule—e.g., a hapten—enhancing its immunogenicity and mediating transportation through the cell or body

tractor

(trăk′tor) [L., drawer]

Any device or instrument for applying traction.