Meanings
nounHHH syndrome (uncountable)
- uncountableA rare autosomal-recessive urea cycle disorder affecting the enzyme ornithine translocase, which causes ammonia to accumulate in the blood.
Origin
From the initial letters of hyperornithinemia, hyperammonemia and homocitrullinuria.
Full word history & related roots →Cite this entry
APA
HHH syndrome. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/HHH%20syndrome
MLA
“HHH syndrome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/HHH%20syndrome. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “HHH syndrome,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/HHH%20syndrome.
Source: HHH syndrome on Wiktionary, CC BY-SA 4.0.