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Achilles jerk
Achilles tendon
achiral
achkan
achlorhydria
achondrite
achondroplasia
achoo
achromat
achromatic
achromatic color
achromatic lens
achromatic prism
achromatopsia
achy
aciclovir
acicula
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achromat
ach·ro·mat [ ákrə màt ] (plural ach·ro·mats)


noun 
Definition:
 
1. physics 
Same as  achromatic lens
2. ophthalmology 
Same as  monochromat
[Early 20th century. Back-formation <achromatic]
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