aid

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aid

1. Mountaineering any of various devices such as piton or nut when used as a direct help in the ascent
2. (in medieval Europe; in England after 1066) a feudal payment made to the king or any lord by his vassals, usually on certain occasions such as the marriage of a daughter or the knighting of an eldest son

AID

References in periodicals archive ?
He said that Dubai Hospital has so far succeeded in conducting seven bone conduction hearing aid procedures (for individuals whose skull was thicker than 8 millimeters).
Partially implantable bone conduction hearing aids without a percutaneous abutment (Otomag): Technique and preliminary clinical results.
The different styles of hearing aids include custom-molded (completely in the canal, in the ear), behind the ear or bone conduction hearing aids. They are further divided into those with analogue and digital technology.