PULMONARY is a 9 letter word that starts with P.

1. \Pul"mo*na*ry\, a. [L. pulmonarius, from pulmo, -onis,
   a lung; of uncertain origin, perh. named from its lightness,
   and akin to E. float: cf. F. pulmonaire. Cf. {Pneumonia}.]
   Of or pertaining to the lungs; affecting the lungs; pulmonic.
   
   {Pulmonary artery}. See the Note under {Artery}.
   
   

2. \Pul"mo*na*ry\, n. [Cf. F. pulmonaire. See
   {Pulmonary}, a. ] (Bot.)
   Lungwort. --Ainsworth.