- axis - a straight line through a body or figure that satisfies certain conditions
--1 is a kind of line
--1 has particulars:coordinate axis; major axis; semimajor axis; minor axis; semiminor axis; principal axis, optic axis - axis, axis of rotation - the center around which something rotates
--2 is a kind of mechanism
--2 has particulars: pivot, pin; rotor head, rotor shaft- axis - the main stem or central part about which plant organs or plant parts such as branches are arranged
--3 is a kind of stalk, stem
--3 has part: stele
--3 has particulars: rachis; spadix- Axis - in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations; "the Axis opposed the Allies in World War II"
--4 is a kind of alliance, coalition, alignment, alinement
- bloc, axis - a group of countries in special alliance
--5 is a kind of alliance, coalition, alignment, alinement
--5 has particulars: sterling area, sterling bloc, scheduled territories- axis, axis vertebra - the 2nd cervical vertebra; serves as a pivot for turning the head
--6 is a kind of cervical vertebra, neck bone
--6 has parts: odontoid process - axis, axis of rotation - the center around which something rotates