• Webster's Revised Unabridged Dictionary
    • Rectrix A governess; a rectoress.
    • Rectrix (Zoöl) One of the quill feathers of the tail of a bird.
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Century Dictionary and Cyclopedia
    • n rectrix Same as rectoress.
    • n rectrix In ornithology, a tail-feather; one of the long or large quill-feathers of a bird's tail: so called from its use in directing or steering the course of a bird in flight, like a rudder. The rectrices are comparable to the similar large flight-feathers of the wing, called remiges. In the Saururæ, or Jurassic birds with long lizard-like bony tail, the rectrices are biserially or distichously arranged in a row on each side of the caudal vertebræ. In all modern birds they are set together in a fan-like manner upon the pygostyle. (See Eurhipidura.) In a few birds they are rudimentary, as in grebes. The most frequent number by far is twelve, which prevails (with few anomalous exceptions) throughout the great order Passeres, and also in very many other birds of different orders. In many picarian birds the number is ten; in a very few eight. In various water-birds the rectrices run up to higher numbers, twenty-four being probably the maximum. There is normally always an even number, these feathers being paired. In size, shape, and texture they are endlessly varied, giving rise to all the different shapes a bird's tail presents.
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Chambers's Twentieth Century Dictionary
    • n Rectrix rek′triks one of the long tail-feathers of a bird, so called because used in steering the bird in its flight
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Webster's Revised Unabridged Dictionary
L., fem. of rector,


In literature:

The outermost rectrix of No.
"Birds from Coahuila, Mexico" by Emil K. Urban

In news:

Rectrix becomes a service provider at Worcester Regional Airport as company continues expansion in Massachusetts.
Rectrix Aviation Launches Business Operations at Worcester Regional Airport.
NEW MEMBER of the growing Rectrix Aviation family in Hyannis is this brand new $11.5 million, 58-foot long Bombardier Learjet 45XR sitting on the gleaming deck of the company hangar at Barnstable Municipal Airport, ready to roam the skies.
Rectrix Aerodrome Centers lost its appeal of its federal civil suit against Barnstable Municipal Airport in a June 23 decision by the First Circuit Court of Appeals.
Rectrix opens second FBO.
Rectrix Aerodrome Centers has opened a second FBO, at Sarasota-Bradenton International Airport in Florida, which joins the company's first FBO in Hyannis, Mass.
Rectrix Aerodrome Centers is attempting something that has bedeviled many an FBO over the years, trying to force an airport's municipal owners to allow FBOs to pump jet fuel.