photo

[foh-toh] /ˈfoʊ toʊ/
noun, plural photos.
1.
photograph.
2.
Informal. photo finish.
Origin
1855-60; shortened form of photograph

photo-

1.
a combining form meaning “light” (photobiology); also used to represent “photographic” or “photograph” in the formation of compound words:
photocopy.
Also, especially before a vowel, phot-.
Origin
< Greek, combining form of phôs (genitive phōtós)
Examples from the web for photo
  • Its green banners could be seen above photo shops everywhere.
  • Zoom in on a spectacular national park photo to reveal hundreds more photos making up the original.
  • When you see the right side of the left photo next to the left side of the right photo, it looks lopsided in comparison.
  • Our next semimonthly photo contest will be self-portraits.
  • Contest juries are usually composed of professional photographers, photo editors and art directors.
  • photo detective work could solve an enigma nearly nine decades old.
  • photo software and other applications were simple to use too.
  • Winter may arrive early, too--as shown in the photo at right.
  • First, burst onto the scene with some bold, voice-of-the-generation debut-preferably with a comely author photo.
  • Too often, models were showing up to photo-shoots hours late or drug-addled.
British Dictionary definitions for photo

photo

/ˈfəʊtəʊ/
noun (pl) -tos
1.
short for photograph (sense 1)

photo-

combining form
1.
of, relating to, or produced by light: photosynthesis
2.
indicating a photographic process: photolithography
Word Origin
from Greek phōs, phōt- light
Word Origin and History for photo
n.

1860, shortening of photograph. The verb is first recorded 1865, from the noun. Photo finish is attested from 1936. Photo opportunity first recorded 1974.

photo-

word-forming element meaning "light" or "photographic" or "photoelectric," from Greek photo-, comb. form of phos (genitive photos) "light," from PIE root *bha- "to shine" (see phantasm).

photo in Medicine

photo- or phot-
pref.

  1. Light; radiant energy: photosynthesis.

  2. Photographic: photofluorography.

photo in Science
photo-  
A prefix that means "light," as in photoreceptor.