Achilles tendon reflex time

== English == === Etymology === First use appears c. 1934 in medical literature, although the exact date of its first use is uncertain. === Noun === Achilles tendon reflex time (countable and uncountable, plural Achilles tendon reflex times) (medicine, endocrinology) A measurement of the half-relaxation time of the Achilles tendon, used to diagnose disorders of the thyroid. Synonym: ART (initialism) For quotations using this term, see Citations:Achilles tendon reflex time.