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astatine

 [as´tah-tēn]
a chemical element, atomic number 85, atomic weight 210, symbol At. (See Appendix 6.)

AT

Abbreviation for the adenine-thymine hydrogen-bonded base pair observed in double-stranded polynucleotides.

At

Symbol for astatine.

AT

atrial tachycardia.

At

astatine.

At

symbol for the element astatine.

At

The area of a circle, the diameter of which equals the section thickness (At = πT2/4, where T is the section thickness).

AT

Abbreviation for:
acceleration therapeutics
Achilles tendon
action tremor
acute thrombosis
acute tonsillitis
acyltransferase
adenine-thymine
adenomatoid tumour
adoptive transfer
aerobic training
agglutination test
air temperature
air trapping
alopecia totalis
alternative therapy
ambient temperature
anaerobic threshold
angiotensin
anterior temporal
anterior tibial
antithrombin
antitrypsin
arterial tension
arterial thrombosis
assistive technology (Medspeak-UK) 
ataxia-telangiectasia
atlas
atrial tachycardia
atrial tachyarrhythmia
atrophic thyroiditis
autogenic training
autoimmune thrombocytopenia
autoimmune thyroiditis
autologous transfusion
autologous transplantation
axillary temperature

AT

Abbreviation for adipose tissue; atrial tachycardia.

At

Abbreviation for astatine.

AT

anaerobic threshold

At

chemical symbol, astatine.
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