Definition that contains first stage
- page in medieval times a youth acting as a knight's attendant as the first stage in training for knighthood
- booster the first stage of a multistage rocket
- varlet in medieval times a youth acting as a knight's attendant as the first stage in training for knighthood
- prophase the first stage of meiosis
- prophase the first stage of mitosis
- primary syphilis the first stage; characterized by a chancre at the site of infection
- booster rocket the first stage of a multistage rocket
- takeoff booster the first stage of a multistage rocket
- booster unit the first stage of a multistage rocket
- takeoff rocket the first stage of a multistage rocket