Nouns

photometrician

noun

someone who practices photometry

photomicrograph

noun

a photograph taken with the help of a microscope

photometry

noun

measurement of the properties of light (especially luminous...

photostat

noun

a duplicating machine that makes quick positive or negative...

phototropism

noun

an orienting response to light

phratry

noun

people descended from a common ancestor

phrenology

noun

a now abandoned study of the shape of skull as indicative of...

phrygia

noun

an ancient country in western and central Asia Minor

phthisis

noun

involving the lungs with progressive wasting of the body

phycocyanin

noun

blue pigment in algae

phycomycetes

noun

a large and probably unnatural group of fungi and funguslike...

phycology

noun

the branch of botany that studies algae

phylactery

noun

(Judaism) either of two small leather cases containing texts...

phyle

noun

a tribe of ancient Athenians

phylloclade

noun

a flattened stem resembling and functioning as a leaf

phyllode

noun

an expanded petiole taking on the function of a leaf blade

phylloquinone

noun

a form of vitamin K

phylloxera

noun

type genus of the Phylloxeridae: plant lice

phylogenesis

noun

(biology) the sequence of events involved in the evolutionar...

phylogeny

noun

(biology) the sequence of events involved in the evolutionar...

physalis

noun

ground cherries

physicalism

noun

(philosophy) the philosophical theory that matter is the onl...

physiography

noun

the study of physical features of the earth's surface

phytology

noun

the branch of biology that studies plants

phytohormone

noun

(botany) a plant product that acts like a hormone

phytonadione

noun

a form of vitamin K

piaffe

noun

a cadenced trot executed by the horse in one spot

pianism

noun

performance by or technique of a pianist

piaster

noun

100 kurus equal 1 lira in Turkey

piastre

noun

100 kurus equal 1 lira in Turkey

pibgorn

noun

an ancient (now obsolete) single-reed woodwind; usually made...

picador

noun

the horseman who pricks the bull with a lance early in the b...

pibroch

noun

martial music with variations; to be played by bagpipes

piccaninny

noun

(ethnic slur) offensive term for a Black child

pichiciago

noun

very small Argentine armadillo with pale silky hair and pink...

pickerelweed

noun

American plant having spikes of blue flowers and growing in...

pickerel

noun

any of several North American species of small pike

pickelhaube

noun

a spiked helmet worn by German soldiers

picofarad

noun

a unit of capacitance equal to one trillionth of a farad

picometer

noun

a metric unit of length equal to one trillionth of a meter

picosecond

noun

one trillionth (10^-12) of a second; one thousandth of a nan...

pictograph

noun

a graphic character used in picture writing

pictor

noun

a constellation in the southern hemisphere near Dorado and C...

picturesqueness

noun

the quality of being strikingly expressive or vivid

picul

noun

a unit of weight used in some parts of Asia; approximately e...

picumnus

noun

a genus of Picidae

picus

noun

type genus of Picidae

piddock

noun

marine bivalve that bores into rock or clay or wood by means...

pieplant

noun

long pinkish sour leafstalks usually eaten cooked and sweete...

pietism

noun

exaggerated or affected piety and religious zeal