Definition of heteromerous in US English:

heteromerous

adjective

Biology
  • Having or composed of parts that differ in number or position.

    • ‘Diagnostic characters for adults include emarginate eyes, definite epistomal margin, heteromerous tarsi, closed prothoracic coxal cavities, concealed antennal insertions, usually stout, moniliform or incrassate antennae (occasionally serrate or clubbed), and paired abdominal defensive glandular reservoirs.’

Pronunciation

heteromerous

/ˌhedəˈrämərəs/