See Also: pointal(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
EXIT(dictionary)
exit(dictionary)
Exit fee(money)
Exit(tourism)
exit(2)(dictionary)
exit(1)(dictionary)
exit block(medicine)
exit domain(medicine)

exit pupil (medicine) and pointal (medicine)


exit pupil (medicine)


exit pupil
<microscopy> The exit pupil of a lens system is an image of the entrance pupil (hence conjugate to it) and normally should be the image of the limiting diaphragm. In both the microscope and the telescope it is the eyepoint where the beam has its smallest cross-section. It is also called the Ramsden circle or eyepoint.


pointal (medicine)


pointal


1. <botany> The pistil of a plant.

2. A kind of pencil or style used with the tablets of the Middle Ages. "A pair of tablets [i. E, tablets] . . . And a pointel."

3. See Poyntel.

Origin: From Point: cf. F. Pointal an upright wooden prop, OF. Pointille a prick or prickle.

Source: Websters Dictionary