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spiroid

adjective
spi·​roid | \ ˈspīˌrȯid\
variants: or less commonly spiroidal \ (ˈ)spī¦rȯidᵊl \

Definition of spiroid

: resembling a screw : spiral in form

History and Etymology for spiroid

spiroid from New Latin spiroïdes, from Greek speiroeidēs, from speira coil, twist + -oeidēs -oid; spiroidal International Scientific Vocabulary spiroid + -al

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