abdomen frontal body lying between the pelvis and the thorax; cavity of the torso.
abduction parting (as in glottal opening).
acoustics the science of sound, including its production, transmission, and effects; the sum of the qualities of an enclosure that determines the nature of the sound generated within it.
adduction coming together (as in glottal closure).
aggiustamento a system of vowel modification for achieving an equalized scale throughout registers of the singing voice.
alveolar articulated or produced with the tongue apex touching the upper front alveolar ridge.
alveoli air cells of the lungs.
anterolateral in front and to the side.
appoggiare to lean against, to be in contact with, to support.
appoggio an international breath management technique in singing; coordination among the large, flat abdominal muscles of the anterior/lateral wall and the thoracic cage throughout the breath cycle.
approximate to approach or produce vocal-fold contact or closure at the median position. (See Adduction.)
articulators tongue, lips, teeth, hard and soft palates, which modify the acoustic properties of the vocal tract.
arytenoid cartilages paired laryngeal cartilages to which the vocal folds are attached.