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Fissirostres

plural noun Fis·si·ros·tres \ ˌfisəˈräˌstrēz \

Definition of Fissirostres

in former classifications
: a group of birds having the bill deeply cleft, including the swifts, nightjars, swallows, and others, and not representing natural relationships

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Origin and Etymology of fissirostres

New Latin, from fissi- + -rostres (from Latin rostrum beak)

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