anomalo-, anomal-

Exhibiting partial loss of green color vision so that an increased intensity of green is required in a mixture of red and green to match a given yellow.

Colorblindness of the red-green type, also known as deuteranopia: "A person who has a mutated form of the medium-wavelength (green) pigment that is shifted towards the red end of the spectrum resulting in a reduction in sensitivity to the green area of the spectrum."

Intrauterine development of an organ or structure that is abnormal in form, structure, or position.

A birth defect caused by a structural abnormality or a marked deviation from the average or norm; anything that is structurally unusual or irregular or contrary to a general rule; such as, a congenital defect.

There are four clinically significant medical types of anomalies: malformation, disruption, deformation, and dysplasia (abnormal in form; for example, retinal dysplasia is abnormal formation of the retina during embryonic development).

In geochemistry, an unusually high concentration of one or more chemical elements in a sample of rock, soil, vegetation, or water: A geochemical anomaly is a high concentration of hydrocarbons in soil which often indicates a nearby mineral deposit.

Having abnormally short limbs.

1. A deficiency of color perception in which the red-sensitive pigment in cones is decreased.
2. A defect of vision characterized by a diminished response of the retina to red.

An unusual type of color blindness in which there is a deficiency or lack of sensitivity to color by certain retinal or the blue sensitive cones: Hector learned to compensate for his tritanomaly by asking his friends about certain colors in order to make sure he got them right.