abies lowiana
- n medium to tall fir of central to western United States having a narrow erect crown and soft wood
abdomen
- n the region of the body of a vertebrate between the thorax and the pelvis
- n the cavity containing the major viscera; in mammals it is separated from the thorax by the diaphragm
abdominal actinomycosis
- n a serious form of actinomycosis that affects the abdomen
abdominal aortic aneurysm
- n an aneurysm of the abdominal aorta associated with old age and hypertension
abdominal breathing
- n breathing in which most of the respiratory effort is done by the abdominal muscles