sag

(redirected from sagittal depth)
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sag

1. Nautical the extent to which a vessel's keel sags at the centre
2. 
a. a marshy depression in an area of glacial till, chiefly in the US Middle West
b. (as modifier): sag and swell topography

sag

[sag]
(electricity)
Slack introduced in an aerial cable or open-wire line to compensate for contraction during cold weather.
(geology)
A pass or gap in a ridge or mountain range shaped like a saddle.
A shallow depression in a relatively flat land surface.
A regional basin with gently sloping sides.
(metallurgy)
Decrease in the section thickness of a casting caused by weakness of the sand mold.

sag

(1) A momentary drop in voltage from the power source. Contrast with spike.

(2) (SAG) (SQL Access Group) See CLI.
References in periodicals archive ?
The sagittal depth of the lens is emerging as a more suitable parameter for controlling the fit due to being a better comparator between different lens designs, rather than BOZR and TD.
No 7's professional services manager, Katie Harrop, will discuss the advanced orthokeratology, EyeDream, 'a real practice differentiator.' No 7 professional services consultant, Nick Howard, will demonstrate how best to integrate corneal topography into everyday practice, while Dr Caroline Burnett-Hodd will provide an insight into fitting lenses using the sagittal depth criteria, specifically centred on SoClear and ICD 16.5, large diameter lens design.
Instead it is more relevant to start thinking in terms of sagittal depth. It is not important that the curve of the lens is the same as the curve of the eye, particularly as an irregular cornea may have extremely varied topography, even within the pupil zone.