a. a systematic presentation of intersecting coordinate lines on a flat surface upon which features from a curved surface (as of the earth or the celestial sphere) may be mapped <an equal-area map projection> b. the process or technique of reproducing a spatial object upon a plane or curved surface or a line by projecting its points; also a graph or figure so formed 2. a transforming change 3. the act of throwing or thrusting forward 4. the forming of a plan ; scheming 5. a. (1) a jutting out (2) a part that juts out b. a view of a building or architectural element 6. a. the act of perceiving a mental object as spatially and sensibly objective; also something so perceived b. the attribution of one's own ideas, feelings, or attitudes to other people or to objects; especially the externalization of blame, guilt, or responsibility as a defense against anxiety 7. the display of motion pictures by projecting an image from them upon a screen 8. a. the act of projecting especially to an audience b. control of the volume, clarity, and distinctness of a voice to gain greater audibility 9. an estimate of future possibilities based on a current trend • projectional adjective Synonyms: projection, protrusion, protuberance, bulge mean an extension beyond the normal line or surface. projection implies a jutting out especially at a sharp angle <those projections along the wall are safety hazards>. protrusion suggests a thrusting out so that the extension seems a deformity <the bizarre protrusions of a coral reef>. protuberance implies a growing or swelling out in rounded form <a skin disease marked by warty protuberances>. bulge suggests an expansion caused by internal pressure <bulges in the tile floor>.
New Collegiate Dictionary. 2001.