- achromatic objective
- achromatinic
- achromatocyte
- achromatosis
- achromocyte
- achromoderma
- achylia
- acicular
- acid ion
- acid value
- acidabase balance
- acidic
- acidophil
- acidose
- acidosis
- accrisis
- accute disease
- acedia
- acelomate
- acephaiopodia
- acephalocardius
- acephalostomia
- acephalus paracephalus
- acetabular
- acetabuli
- acetabuloplasty
- aceticoceptor
- acetone
- acetylcholine
- ache
- acheiropodia
- achillorrhaphy
- achillotenotomy
- achlorhydria
- achloride
- acholuria
- acholuric jaundice
- achor
- achorage
- Achroma
- achromacyte
- achromate
- achromatophilia
- achromatopsia
- achromaturia
- achromia parasitica
- achromophilous
- acid albumin
- acid burn
- acid dyspepsia
- acid-fast
- acidaemia
- acidifier
- acidosic
- acidulous
- aciduric
- aciniform
- acinitis
- acinous
- acinus
- aclasis
- acne hypertrophica
- acne punctata
- acne varioliformis
- acneiform
- acormus
- acoumeter
- acousma
- acoustic papilla
- acoustic spot
- acquired
- acquired anaphylaxis
- acrania
- acranial
- acro
- acro-agnosis
- acro-esthesia
- acrocinesis
- acrocontracture
- acrodermatitis
- acrodermatitis continus
- acrodynia
- acrohyperhidrosis
- acromegaly
- acromicria
- acromiohumeral
- acromphalus
- acromycosis
- acronym
- acroparalysis
- acroparesthesia
- acrophobia
- acropurpura
- acrosclerosis
- ACTH
- actinic dermatitis
- actinic keratitis
- actinochemistry
- actinograph
- actinomyces