serpent fern
— Noun
– English
~ tropical American fern with brown scaly rhizomes cultivated for its large deeply lobed deep bluish-green fronds; sometimes placed in genus Polypodium
sea serpent
— Noun
– English
~ huge creature of the sea resembling a snake or dragon
Sagittarius serpentarius
— Noun
– English
~ large long-legged African bird of prey that feeds on reptiles
serrate leaf
— Noun
– English
~ a leaf having a margin notched like a saw with teeth pointing toward the apex
Serratia marcescens
— Noun
– English
~ the type species of the genus Serratia; a species found in water and soil and milk and foods and insects; can cause infections of the endocardium and blood and wounds and urinary tract and respiratory tract; has been tested as a bioweapon
Serratia
— Noun
– English
~ a genus of motile peritrichous bacteria that contain small Gram-negative rod
serration
— Noun
– English
~ a row of notches; "the pliers had serrations to improve the grip"
serration
— Noun
– English
~ the condition of being serrated; "the serrations of a city skyline"
serration
— Noun
– English
~ a single notch in a row of notches; "one of the serrations was broken off"
Serratula
— Noun
– English
~ genus of Old World perennial herbs with spirally arranged toothed leaves
serratus anterior
— Noun
– English
~ muscles that rotate the scapula and elevate the rib cage