A type of light-sensitive cell in the retina of the eye. Cones play a major role in colour vision.
(1) A light-sensitive cell in the retina of the EYE that can also distinguish colours. The other type of light-sensitive cell is called a rod. There are around six million cones in the human retina and these are thought to comprise three types that are sensitive to the three primary colours of red, blue, and green.
(2) A cone biopsy is a surgical technique in which a conical or cylindrical section of the lower part of the neck of the womb is excised.
n. one of the two types of light-sensitive cells in the *retina of the eye (compare rod). The human retina contains 6–7 million cones; they function best in bright light and are essential for acute vision (receiving a sharp accurate image). The area of the retina called the *fovea contains the greatest concentration of cones. Cones can also distinguish colours. It is thought that there are three types of cone, each sensitive to the wavelength of a different primary colour – red, green, or blue. Other colours are seen as combinations of these three primary colours.
A surgical procedure in which a conical or cylindrical section of the lower part of the cervix is removed. A cone biopsy is performed after an abnormal cervical smear test result if the exact precancerous or cancerous area (see cervix, cancer of) cannot be identified by colposcopy.... cone biopsy
Molluscs with cone-shaped shells, at least two species of which (Conus geographicus and C. textile) have been responsible for some 18 human deaths, usually from respiratory arrest. C. geographicus has caused at least one Australian death.... cone shells
(American) A giving woman Coneishah, Coniesha, Conieshah, Conysha, Conyshah, Coneesha, Coneeshah, Coneasha, Coneashah... coneisha
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