CN - Chloroacetophenone, a irritant agent.

COLPRO - Collective protection.

COMMZ - Communications Zone.

Conjunctival - Pertaining to the conjunctiva.

Cornea - The cornea is the transparent front part of the eye that separates it from the air.

CS - O-Chlorobenzylidene Malononitrile, a irritant agent.

Cutaneous - Pertaining to the skin.

CW - Chemical Warfare.

CW - Continuous wave.

CX - Phosgene oxime.

Cyanosis - Bluish discoloration of the skin, caused by inadequate oxygenation of the blood, evident when reduced hemoglobin in the blood exceeds 5g per 100ml.

Defervescence - The period of abatement of fever.

Defoliant - Chemical used to kill plants and trees.

Dermatitis - Inflammation of the skin.

Diaphoresis - Perspiration, especially profuse perspiration.

Diathesis - Condition in which tissues reacts in special ways to certain extrinsic stimuli and thus tends to make the person more susceptible to certain diseases.

Diplopia - Double vision.

Divergence - A description of how fast a laser beam spreads over distance.