noun (singular rectrix /-trɪks/)Ornithology
The larger feathers in a bird’s tail, used for steering in flight. Compare with remiges.
More example sentences
- 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.
mid 18th century: from Latin, feminine plural of rector 'ruler' (see rector).
Definition of rectrices in:
- The US English dictionary