apo

A1P3O1

adjective

In an inactive, unbound state

CommonScrabble 5
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Meanings

apo1

adjectiveapo (not comparable)
  1. not comparablebiochemistryIn an inactive, unbound state

    In this scenario, unbound proteins are predominantly in the ligand-free ("apo") structure.

    2009 January 30, Robert B. Best, Gerhard Hummer, “BIOCHEMISTRY: Unfolding the Secrets of Calmodulin”, in Science
nounapo (plural apos)

plural apos

  1. abbreviationclippingbiochemistryClipping of apolipoprotein.

APO2

noun
  1. Air Post Office (both Army and Air Force)
  2. Army Post Office
  3. Air Force Post Office
  4. abbreviationinitialismmedicineInitialism of acute pulmonary oedema.

Rhymes & wordplay

Anagrams

poapaoopa
Cite this entry
APA

apo. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/apo

MLA

“apo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/apo. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “apo,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/apo.

Source: apo on Wiktionary, CC BY-SA 4.0.