Primary-producer
noun, Biology.
1.
any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
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- Primary productivity
noun a measure of the rate at which new organic matter is developed through photosynthesis and chemosynthesis in producer organisms based on the oxygen released and carbon taken in; the transformation of chemical or solar energy to biomass Examples Most primary productivity occurs through photosynthesis, where green plants convert solar energy, carbon dioxide, and water […]
- Primary pulmonary lobule
primary pulmonary lobule n. A unit of pulmonary tissue that includes a bronchiole, alveolar ducts, sacs, and alveoli. Also called respiratory lobule.
- Primary-quality
noun, Epistemology. 1. any of the qualities inherent in an object, namely quantity, extent, figure, solidity, and motion or rest.
- Primary-rainbow
noun 1. the most commonly seen rainbow, formed by light rays that undergo a single internal reflection in a drop of water.
- Primary rate interface
(PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based […]