Home > Industry/Domain > IT services

IT services

This industry comprises establishments that provide internet technology services to all industries. These include maintenance and support services, network services, and professional services such as systems integration and It consulting services.

0Categories 1711Terms

Add a new term

Contributors in IT services

IT services >

Alcoholism

Health care; Cancer treatment

A chronic disease in which a person craves drinks that contain alcohol and is unable to control his or her drinking. A person with this disease also needs to drink greater amounts ...

Atoroidal surface

Eyewear; Optometry

Surface having mutually perpendicular principal meridians of unequal curvature, of which the cross-section in at least one principal meridian is not circular.

Back vertex focal length

Eyewear; Optometry

Distance in an optical system from the back surface to the focal point measured along the optical axis (axis of symmetry).

Auxiliary lenses

Eyewear; Optometry

Additional corrective lenses to facilitate access to higher refractive powers without an excessive numbers of lenses.

Balancing lens

Eyewear; Optometry

Lens fitted to a spectacle frame or mount to balance the weight and/or the appearance of the other lens.

Atoric lens

Eyewear; Optometry

Lens with astigmatic power in which at least one principal meridian is not spherical.

Back surface

Eyewear; Optometry

That surface of the spectacle lens intended to be fitted nearer to the eye.

Sub-categories