| 释义 |
Norplant  noun [mass noun] trademarkA contraceptive for women consisting of small rods implanted under the skin which gradually release the hormone levonorgestrel over a number of years.The five-year contraceptive implant Norplant also can affect mood, although hormone levels tend to return to normal soon after the rods are surgically removed....- At present there are only two types of contraceptive implant used in the UK, Norplant and Implanon.
- Conversely, the progestin-only ring acts similar to Norplant, but may only last for 1 or 2 years.
Origin 1980s: from (levo)nor(gestrel) (im)plant. |