trilobation

== English == === Etymology === From trilobate +‎ -ion. === Noun === trilobation (usually uncountable, plural trilobations) The state of being trilobate; the state of having three lobes. === References === “trilobation”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.