| Word | Definitions | Synonyms |
|---|---|---|
| ponderosa | (noun) common and widely distributed tall timber pine of western North America having dark green needles in bunches of 2 to 5 and thick bark with dark brown plates when mature | Synonyms: bull pine, Pinus ponderosa, ponderosa pine, western yellow pine |
| serosa | (noun) a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid | Synonyms: serous membrane |