trilaryngealism

== English == === Etymology === From tri- +‎ laryngeal +‎ -ism. === Noun === trilaryngealism (Indo-European linguistics) A school of thought that argues that that the reconstruction of Proto-Indo-European requires three laryngeal consonants, usually marked as ⟨h₁⟩, ⟨h₂⟩, and ⟨h₃⟩.