noun, plural rectrices
[rek-trahy-seez, rek-truh-seez] /rɛkˈtraɪ siz, ˈrɛk trəˌsiz/ (Show IPA). Ornithology.
one of the tail feathers of a bird controlling direction during flight.
noun (pl) rectrices (ˈrɛktrɪˌsiːz; rɛkˈtraɪsiːz)
any of the large stiff feathers of a bird’s tail, used in controlling the direction of flight
noun, plural rectums, recta [rek-tuh] /ˈrɛk tə/ (Show IPA). Anatomy. 1. the comparatively straight, terminal section of the intestine, ending in the anus. noun (pl) -tums, -ta (-tə) 1. the lower part of the alimentary canal, between the sigmoid flexure of the colon and the anus rectum rec·tum (rěk’təm) n. pl. rec·tums or rec·ta (-tə) […]
noun, plural recti [rek-tahy] /ˈrɛk taɪ/ (Show IPA). Anatomy. 1. any of several straight muscles, as of the abdomen, thigh, eye, etc. noun (pl) -ti (-taɪ) 1. (anatomy) a straight muscle, esp either of two muscles of the anterior abdominal wall (rectus abdominis)
- Rectus muscle of abdomen
rectus muscle of abdomen rec·tus muscle of abdomen (rěk’təs) n. A muscle with origin from the pubis, with insertion into the xiphoid process and the fifth to seventh costal cartilages, and whose action flexes the vertebral column and draws the chest downward.
- Rectus muscle of thigh
rectus muscle of thigh n. A muscle with origin from the ilium and the acetabulum, with insertion into a tendon of the quadriceps muscle of the thigh.