on·line or on-line 
(ŏnlīn, ôn-)
(ŏnlīn, ôn-)adj.
1.
a. Connected to a central computer or to a computer network: The workers' terminals are online during business hours.
b. Accessible via a computer or computer network: an online database.
c. Conducted or facilitated by means of a computer network: online dating.
2. In production or operation, often as part of a supply chain: Is the new factory online yet?
online adv.
- photoelectron
- photoemission
- photoemission spectroscopy
- photoengrave
- photoengraver
- photoengraving
- photo-essay
- photo essay
- photo-essayist
- photo finish
- photoflash
- photoflood
- photofluorogram
- photofluorographic
- photofluorography
- photog
- photogelatin process
- photogene
- photogenic
- photogenically
- photogram
- photogrammetric
- photogrammetrist
- photogrammetry
- photograph