| PRE | of or relating to the early phases of a disease when accurate diagnosis is not possible because symptoms of the disease have not yet appeared |
|---|---|
| PRE | a laboratory test of a new drug or a new invasive medical device on animal subjects |
| PRE | a laboratory test of a new drug or a new invasive medical device on animal subjects |
| PRE | a laboratory test of a new drug or a new invasive medical device on animal subjects |
| PRE | keep from happening or arising |
| PRE | make impossible, esp. beforehand |
| PRE | the act of preventing something by anticipating and disposing of it effectively |
| PRE | made impossible |
| PRE | (of hatchlings) covered with down and having eyes open |
| PRE | (botany) appearing or developing early |
| PRE | characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude) |
| PRE | teething at an earlier age than expected |