downhole

[ doun-hohl ]

noun

1. a hole dug or drilled downward, as in a mine or a petroleum or gas well.

adjective

1. occurring or situated in such a hole.

downhole

/ ˈdaʊnˌhəʊl /

adjective

1. (in the oil industry) denoting any piece of equipment that is used in the well itself

Word History and Origins

Origin of downhole¹

down ¹ + hole