1. Definition: 1. place or attach firmly in or on a base; "seat the camera on the tripod"

View more information about seat

1. Definition: 1. structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure

View more information about sill

1. Definition: 1. especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves"

View more information about radical

1. Definition: 1. the remains of a body part that was functional at an earlier stage of life; "Meckel's diverticulum is the rudiment of the embryonic yolk sac"

View more information about rudiment

1. Definition: 1. (law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature); "the rationale for capital punishment"; "the principles of internal-combustion engines"

View more information about principle

View more information about substratum

View more information about rock-bottom

View more information about terra-firma

1. Definition: 1. support from beneath

View more information about underpinning

1. Definition: 1. lowest support of a structure;

View more information about substructure

View more information about understructure