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Pertaining to the function of an organ or part, or to the functions in general. Functional disease (Med.), a disease of which the symptoms cannot be referred to any appreciable lesion or change of structure; the derangement of an organ arising from a cause, often unknown, external to itself opposed to organic disease,…

To assign to some function or office. [R.]

In a functional manner; as regards normal or appropriate activity. The organ is said to be functionally disordered. Lawrence.

One of the divisions of the ungulate animals. The functional toes of the hind foot are even in number, and the third digit of each foot (corresponding to the middle finger in man) is asymmetrical and paired with the fourth digit, as in the hog, the sheep, and the ox; - - opposed to Perissodactyla.

In a balloon, the braced wooden ring attached to the suspension ropes at the bottom, functionally analogous to the keel of a ship.

A condition of lowered functional activity, without visible structural change, produced in an organ by a shock, as by fall or blow; as, a concussion of the brain.

An extensive order of insects having only two functional wings and two balancers, as the house fly, mosquito, etc. They have a suctorial proboscis, often including two pairs of sharp organs (mandibles and maxillæ) with which they pierce the skin of animals. They undergo a complete metamorphosis, their larvæ (called mag…

A functional nervous affection or disease, that is, a disease of the nerves without any appreciable change of nerve structure.

cs in the skeleton, esp. in the pelvis and hind legs, which in some genera had only three functional toes, and supported the body in walking as in Iguanodon. See Illust. in Appendix.

or the images seen. -- Psychical contagion, the transference of disease, especially of a functional nervous disease, by mere force of example. -- Psychical medicine, that department of medicine which treats of mental diseases.

A disease of the mind; especially, a functional mental disorder, that is, one unattended with evident organic changes.

llary system, the muscular system, the digestive system, etc.; hence, the whole body as a functional unity.