Sectant

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sectant \Sec"tant\, n. [L. secare, sectum, to cut.]
     One of the portions of space bounded by the three coordinate
     planes. Specif. (Crystallog.), one of the parts of a crystal
     into which it is divided by the axial planes.
     [1913 Webster]