patellar reflex n.
A reflex contraction of the quadriceps muscle resulting in a sudden involuntary extension of the leg, produced by a sharp tap to the tendon below the patella. Also called knee jerk, knee-jerk reflex, knee reflex, quadriceps reflex.
| a scrap or morsel of food left at a meal. |
| a gadget; dingus; thingumbob. |