See Also: Preven emergency contraceptive kit(health)
contraceptive(dictionary)
contraceptive(dictionary)
Contraceptive(medicine)
gear(encyclopedia)
first gear(dictionary)
low gear(dictionary)
top gear(dictionary)
gear(medicine)
gear(dictionary)

Preven emergency contraceptive kit (health) and gear (sh)


Preven emergency contraceptive kit (health)


Preven emergency contraceptive kit is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in Other countries. Active ingredient(s): ethinyl estradiol; levonorgestrel.





gear (sh)




Machine component consisting of a toothed wheel attached to a rotating shaft.

Gears operate in pairs, the teeth of one engaging the teeth of a second, to transmit and modify rotary motion and torque. To transmit motion smoothly, the contacting surfaces of gear teeth must be carefully shaped to a specific profile. The smaller of a gear pair is often known as the pinion. If the pinion is on the driving shaft, the pair acts to reduce speed and to amplify torque; if the pinion is on the driven shaft, the pair acts to increase speed and reduce torque.