Taber's Medical Dictionary
cone
To view the entire topic, please sign in or purchase a subscription.
Nursing Central is an award-winning, complete mobile solution for nurses and students. Look up information on diseases, tests, and procedures; then consult the database with 5,000+ drugs or refer to 65,000+ dictionary terms. Explore these free sample topics:
-- The first section of this topic is shown below --
(kōn )
[Gr. kōnos, pine cone]
1. A solid or hollow three-dimensional figure with a circular base and sides sloping up to a point.
2. In the outer layer of the retina, any of the flask-shaped cells that are stimulated by the wavelengths of light of different colors. The cones are essential for color discrimination.
SYN: SEE: retinal cone; SEE: cone cell
SEE: retina for illus.; SEE: rod; SEE: rod cell
3. A hollow, tapered, cylindrical device used in upper-extremity exercise to improve grasp, coordination, and range of motion.
4. A device on a dental radiography machine that indicates the direction of the central beam and helps to establish the desired source-to-film distance.
-- To view the remaining sections of this topic, please sign in or purchase a subscription --
(kōn )
[Gr. kōnos, pine cone]
1. A solid or hollow three-dimensional figure with a circular base and sides sloping up to a point.
2. In the outer layer of the retina, any of the flask-shaped cells that are stimulated by the wavelengths of light of different colors. The cones are essential for color discrimination.
SYN: SEE: retinal cone; SEE: cone cell
SEE: retina for illus.; SEE: rod; SEE: rod cell
3. A hollow, tapered, cylindrical device used in upper-extremity exercise to improve grasp, coordination, and range of motion.
4. A device on a dental radiography machine that indicates the direction of the central beam and helps to establish the desired source-to-film distance.
There's more to see -- the rest of this entry is available only to subscribers.
