scle·ro·ma 
(sklə-rōmə)
(sklə-rōmə)n. pl. scle·ro·mas or scle·ro·ma·ta (-mə-tə)
An abnormally hard patch of body tissue especially in the upper respiratory tract.
[New Latin, from Greek sklērōma, hardening, from sklēroun, to harden, from sklēros, hard.]
- preferentialist
- preferentially
- preferential shop
- preferential voting
- preferment
- preferred provider organization
- preferred stock
- preferrer
- prefiguration
- prefigurative
- prefiguratively
- prefigure
- prefigurement
- prefinished
- prefix
- prefixal
- prefixally
- prefixation
- prefixion
- preflight
- preform
- preformation
- prefrontal
- prefrontal lobotomy
- pregame