| ALC | absolute lymphocyte count; acute lethal catatonia; aided living center; Alternative Lifestyle Checkl... |
|---|---|
| ANC | absolute neutrophil count; acid neutralization capacity; antigen-neutralizing capacity; Army Nurse C... |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| ARD | absolute reaction of degeneration; acute radiation disease; acute respiratory disease; adult respira... |
| ART | absolute retention time; Accredited Record Technician; acoustic reflex test; algebraic reconstructio... |