Definition of "CTA"

CTA

proper noun
1. Initialism of Chicago Transit Authority: an operator of mass transit in Chicago and some of its surrounding suburbs.
2. Initialism of Central Tibetan Administration.
noun
countable and uncountable, plural CTAs
1. Initialism of call to action.
2. (medicine) Initialism of computed tomography angiography.
3. (finance) Initialism of commodity trading adviser.
adjective
not comparable
1. (pulmonology) Initialism of clear to auscultation, used to describe the lung or lungs of patient.
  Quotations
  Lungs ¶ Lung fields CTA bilaterally. Few basilar crackles, mild expiratory wheezing
  2009, Julie M. Koehler, James E. Tisdale, “Hypertension”, in Terry L. Schinghammer, Julia M. Koehler, editors, Pharmacotherapy Casebook: A Patient-Focused Approach‎, 7th edition, McGraw Hill, page 40