infundibuliform

/ˌɪnfənˈdɪbjələfɔrm/
adjective
  1. Shaped like a funnel or cone with a wide top and narrow bottom.
    • The cave's entrance was infundibuliform, narrowing quickly as it went deeper underground.
    • Botanists noted the infundibuliform petals of the morning glory flower.
    • The infundibuliform shape of the ancient vase helped pour liquids without spilling.
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