project + -ion

PROJECTION, PROTRUSION, PROTUBERANCE, BULGE mean an extension beyond the normal line or surface.

PROJECTION implies a jutting out especially at a sharp angle.

e.g. those projections along the wall are safety hazards

PROTRUSION suggests a thrusting out so that the extension seems a deformity.

e.g. the bizarre protrusions of a coral reef

PROTUBERANCE implies a growing or swelling out in rounded form.

e.g. a skin disease marked by warty protuberances

BULGE suggests an expansion caused by internal pressure.

e.g. bulges in the tile floor

source: [Fate/stay nightの衛宮士郎が投影魔術を使うGIF画像｜無料GIF画像検索 GIFMAGAZINE 690214]

1. an estimate or forecast of a future situation or trend based on a study of present ones:

(数値の)見積もり; (既知の情報に基づく)見通し, 予測.

e.g. plans based on projections of slow but positive growth

e.g. population projection is essential for planning.

2. the presentation of an image on a surface, especially a movie screen:

(映画･スライドの)映写

e.g. quality illustrations for overhead projection.

an image projected on a surface:

投影されたもの

e.g. the background projections featured humpback whales.

the ability to make a sound, especially the voice, heard at a distance:

(はっきりとした)発声.

e.g. I taught him voice projection.

3. the presentation or promotion of someone or something in a particular way:

e.g. the legal profession's projection of an image of altruism.

a mental image viewed as reality:

〘心〙 投影, 投射

e.g. monsters can be understood as mental projections of mankind's fears.

the unconscious transfer of one's own desires or emotions to another person:

感情の移入〘自己の感情を他人に投影させること〙.

e.g. we protect the self by a number of defense mechanisms, including repression and projection.

4. a thing that extends outward from something else:

｟かたく｠ 突起, 突出部

e.g. the particle board covered all the sharp projections.

5. Geometry the action of projecting a figure.

6. the representation on a plane surface of any part of the surface of the earth or a celestial sphere.

投影像

(also map projection) a method for representing part of the surface of the earth or a celestial sphere on a plane surface.

(地図の)投影図, 図法.

projectionist | prəˈjekSH(ə)nəst | noun

projection (sense 2)

mid 16th century (in projection (sense 6) ): from Latin projectio(n-), from proicere ‘throw forth’ (see project).