bio-, bi-, -bia, -bial, -bian, -bion, -biont, -bius, -biosis, -bium, -biotic, -biotical

Degeneration; loss of physical vitality or ability.

1. Pertaining to abiotrophy, which is the physical degeneration or the loss of vitality.
2. Describing disease processes presumed to be a result of abiotrophy or the progressive loss of vitality of certain tissues or organs leading to disorders or loss of functions.

1. The loss of vitality in or the degeneration of certain cells or tissues, as in the aging process; physical degeneration; loss of vitality: "The degeneration or loss of function or vitality in an organism or in cells or tissues not due to any apparent injury; such as, senile dementia and related abiotrophies."
2. Progressive loss of vitality of certain tissues or organs leading to disorders or loss of function: "The abiotrophy of the heart may be appreciably shorter than that of other organs of the body, leading to early disturbance in function that upsets organ-equilibrium."

The progressive loss of vitality of certain tissues or organs leading to disorders or loss of function; applied especially to degenerative hereditary diseases of late onset.

A noncombustible rock that is organic or formed by organic accumulation of minerals; the category includes diatomite, radiolarite, phosphorite, and some limestones.

The study of the effects of radiation on living organisms.

The deliberate putting of someone to death because that person is suffering from a painful and incurable disease and desperately wants to die; mercy killing.

1. A reference to the study of airborne micro-organisms or spores and their distribution; especially, as agents of infection.
2. Relating to that branch of biology which deals with the distribution of living organisms by air, either the exterior, or outdoor air (extramural aerobiology), or the indoor air (intramural aerobiology).

Someone who studies or specializes in the study of airborne microorganisms or spores.

Either an organism living in air as distinct from water or soil or an organism requiring oxygen.

An apparatus for collecting and determining the bacterial content of a sample of air.

1. Growing or occurring only in the presence of molecular oxygen.
2. Living, or existing, only in the presence of air or free oxygen.
3. An environment in which the partial pressure of oxygen is similar to normal atmospheric levels.
4. Life which is sustainable by means of atmospheric oxygen.

1. A tumor formed by air filling an adventitious pouch, such as laryngocele and trachecele.
2. Distention of a small natural cavity with gas.

An aviation propulsion gas turbine (jet engine) used in a non-aviation applications (that is, an electric power plant) to provide shaft power.

An expert or specialist in agrobiology.