paracentral scotoma
— Noun
– English
～ a scotoma that is adjacent to the fixation point
Polypodium scouleri
— Noun
– English
～ stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib
projection screen
— Noun
– English
～ a white or silvered surface where pictures can be projected for viewing
Phillips screw
— Noun
– English
～ a screw with a special head having crossed slots
Phillips screwdriver
— Noun
– English
～ a screwdriver for use with Phillips screws
Pseudemys scripta
— Noun
– English
～ freshwater turtle of United States and South America; frequently raised commercially; some young sold as pets
pond scum
— Noun
– English
～ free-floating freshwater green algae
pond-scum parasite
— Noun
– English
～ an aquatic fungus of genus Synchytriaceae that is parasitic on pond scum
Philippine Sea
— Noun
– English
～ a naval battle in World War II (1944); a decisive naval victory for the United States fleet over the Japanese who were trying to block supplies from reaching American troops on Leyte
procellariiform seabird
— Noun
– English
～ large long-winged bird with hooked bill and tubular nostrils that wanders the open seas