(Greek: under, below, beneath; less than; too little; deficient, diminished; used as a prefix)
2. Abnormally decreased arterial carbon dioxide tension; hypocarbia.
This type of heating was developed to a high degree by the Romans who used it not only in the warm and hot rooms of the baths, but also almost universally in private houses in the northern provinces.
Many examples of such hypocausts exist in villa and house foundations in Roman centers in Germany and England. The usual custom was to lead the smoke from a hypocaust into a single vertical flue through which it escaped into the open air.
The word comes from Latin hypocaustum, and previously from Greek hypokauston and ultimately from Greek hypokaiein, "to light a fire beneath".
2. An acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.
2. An abnormal concern about one's health, with the false belief that one is suffering from some disease even when there are medical reassurances that the person is not ill: Glenda's doctor told her that there was no evidence that she was suffering from any kind of physical sickness; however, it was possible that she might have a psychological disorder known as hypochondria.