An offshoot of a larger religion; a group sharing particular (often unorthodox) political and/or religious beliefs. / A group following a specific ideal or a leader. / (obsolete) A cutting; a scion.

plural of sect

(surgery) Synonym of cutting

Synonym of Plain Dutch

plural of sectant

(non-native speakers' English) A sectarian.

One of the portions of space bounded by the three coordinate planes. / (crystallography) One of the parts of a crystal into which it is divided by the axial planes.