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adverbstraight up or down without a break
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Definition that contains perpendicularly
- poppet a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines
- birefringence splitting a ray into two parallel rays polarized perpendicularly
- double refraction splitting a ray into two parallel rays polarized perpendicularly
- poppet valve a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines