Basic Guidelines For English SpellingsREAD THESE ARTICLES
The larger feathers in a bird's tail, used for steering in flight.
- ‘I plucked the outer right rectrix (tail feather), thereby inducing the growth of a replacement.’
- ‘We also removed the central rectrix from the right side of the tail of each adult to determine feather growth rate.’
- ‘Most birds showed signs of moderate to heavy wear of the secondary coverts and rectrices.’
- ‘That scheduling results in little overlap between molt of rectrices and outer primaries, both of which are important to landing.’
- ‘Age determination was based on the shape of rectrices.’
Mid 18th century from Latin, feminine plural of rector ‘ruler’ (see rector).
Are You Learning English? Here Are Our Top English Tips