Definition(s)
Landing Nipple
A receptacle that can be installed in a tubing string with an internal profile machined to provide a seating surface whereby various types of plugs or valves can be latched and will seal against the machined surface.
Source: API BULLETIN E3, Environmental Guidance Document: Well Abandonment and Inactive Well Practices for U.S. Exploration and Production Operations, First Edition, January 1993 (Reaffirmed June 2000). Global Standards