Arbuscular mycorrhiza
noun
another name for endotrophic mycorrhiza
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- Arc-back
an undesirable phenomenon, occurring in rectifier tubes, in which current flows in the reverse direction, from anode to cathode, as a result of arcing, limiting the usable voltage of the tube.
- Arc-boutant
. historical examples the flying b-ttress, or arc-boutant is carried across by an arch from one wall to another. the children of westminster abbey rose g. kingsley noun (pl) arcs-boutants (arkbutɑ̃) another name for flying b-ttress
- Arc cosecant
the angle, measured in radians, that has a cosecant equal to a given number. symbol: csc −1. abbreviation: arc csc; arc cosecant the inverse of the cosecant function.
- Arc cosine
trigonometry. the angle, measured in radians, that has a cosine equal to a given number. symbol: cos −1. abbreviation: arc cos; arc cosine the inverse of the cosine function.
- Arc cotangent
the angle, measured in radians, that has a cotangent equal to a given number. symbol: cot −1. abbreviation: arc cot. arc cotangent the inverse of the cotangent function.