tropho-, troph-, -trophy, -trophs, -trophically, -trophic, -trophous

Atrophy or thinning of the skin.

Relating to, or manifesting, diaheliotropism.

A tendency of leaves, or other organs, of plants to have their dorsal surface facing towards the rays of sunlight.

A tendency of leaves or other organs of plants to have their dorsal surface faced towards the rays of light.

The tendency of certain plants or their parts to arrange themselves at right angles to a stimulus.

1. The tendency of a plant or plant part to grow at right angles in response to an external stimulus such as light.
2. The tendency of some plant organs to take a transverse position to the line of action of an outside stimulus.

1. Affecting the conductivity of cardiac muscle; a reference to the influence of cardiac nerves.
2. Affecting the speed and conduction of nerve fibers.

1. The quality or property of affecting the conductivity of a nerve fiber.
2. Negative dromotropism, the property of diminishing the conductivity of a nerve.
3. Positive dromotropism, the property of increasing the conductivity of a nerve.

1. In medicine, a referring to a condition caused by dystrophy or the progressive changes that may result from defective nutrition of a tissue or organ.
2. Relates to or is caused by faulty nutrition.
3. In ecology, with reference to a lake or pond, having too low an accumulation of dissolved nutrients to support abundant plant life.
4. Another description of a lake or pond that contains highly acid, brownish waters filled with undecayed plant materials, and eventually developing into a peat bog or marsh.
5. Refers to a lake with high humus material, sparse bottom fauna, and low dissolved oxygen.

1. Progressive degeneration of a body tissue; such as, muscle, caused by inadequate nourishment of the affected part, as a result of some unknown cause.
2. A condition in which pond or lake water is unable to support much plant or animal life because of an excessive amount of humus content.
3. In medicine, a degenerative, faulty, or inadequate nutrition or development.
4. In pathology, any of a number of disorders characterized by weakening, degeneration; especially, muscular dystrophy, in which the muscles weaken and atrophy.

1. Refers to fungi that grow on the surface covering of roots.
2. Describes an organism that gets its nutrients from the outside surface of its host.

1. The nutrient material, composed chiefly of secretions from the uterine glands, degenerating uterine tissue, and substances in the maternal blood, that nourishes a mammalian embryo prior to the formation of the placenta.
2. The nutritive material that is supplied the embryo of a placental mammal during development.

1. A reference to fungi that grow within roots.
2. Nourished or receiving nourishment from within; for example, fungi or their hyphae receiving nourishment from plant roots in a mycorrhizal association.

When water regions entrophicate, they change in many ways: oxygen disappears from the deep places in water regions first. When nutrients from the bottom are set free into the water the entrophication speeds up. Due to the fact that the content of nutrients is rising the alqae begins to bloom. Because of the changes water regions in their natural state are decreasing, also biological multiplicity decreases, water regions are getting polluted and the quality of the environment is getting worse.

1. In medicine, pertaining to or being in a condition of eutrophy.
2. In ecology, with reference to lakes or ponds, characterized by an abundant accumulation of nutrients that support a dense growth of algae and other organisms, the decay of which depletes the shallow waters of oxygen in summer.
3. Having waters (lakes or ponds) rich in mineral and organic nutrients that promote a proliferation of plant life, especially algae, which reduces the dissolved oxygen content and often causes the extinction of other organisms.