from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Extending outward; projecting.
- adj. Relating to or made by projection.
- adj. Mathematics Designating a property of a geometric figure that does not vary when the figure undergoes projection.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. projecting outward
- adj. of, relating to, or caused by a projection
- adj. describing those properties of a figure that are invariant upon projection
from The Century Dictionary and Cyclopedia
- Produced by projection.
- In geometry, relating to incidences and coincidences; not metrical: as, a projective theorem or property.
- Capable, as two plane figures, of being derived from one another by a number of projections and sections.
Formed by the suffixation of prōiect- (the perfect passive participial stem of the Classical Latin prōiciō, whence the English verb project) with the English -ive; however, compare the post-Classical Latin prōiectīvus ("relating to purging"). (Wiktionary)