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phone1 a short form for "telephone." [2 definitions]
phonetic relating to the method of representing speech sounds by symbols. [2 definitions]
phonograph a machine that reproduces sound that has been recorded in the grooves of a disk; record player.
phosphorus a substance that is a chemical element. One of the common forms of phosphorus is a poisonous yellow solid that glows in moist air. Phosphorus is important to living things. It is used in fertilizers to help plants grow. (symbol: P)
photo (informal) a short form for "photograph."
photo- a prefix that means "light."
photograph a picture made by using a camera that records an image on a surface that is sensitive to light. [2 definitions]
photographer a person whose job is to take photographs.
photography the art or practice of taking and making photographs.
photosynthesis the process by which a green plant uses sunlight to change water and carbon dioxide into food for itself.
phrase a part of a sentence that has meaning and grammatical order but does not have both a subject and a verb. "Wants to see" and "the horror movie" are both phrases in the sentence "Bert wants to see the horror movie again." [4 definitions]
physical of the body. [3 definitions]
physical education instruction in sports, exercise, and the care of the human body. Physical education is taught in a school.
physically in, with, or by means of the body.
physician a doctor of medicine who is qualified and licensed to treat illness and injury.
physicist a scientist who works in physics.
physics (used with a singular verb) the science that deals with matter and energy, their qualities, and the relationships between them. Physics includes the study of light, heat, sound, electricity, and force.
pi a number equal to the ratio of the circumference of a circle to its diameter. The value of pi is approximately 3.1416 or 22/7.
pianist a person who plays the piano, especially as a profession.
piano1 a musical instrument with a keyboard and many wire strings. A piano is played by pressing keys that cause small hammers to strike the strings.
piccolo a small flute with a pitch that is an octave higher than that of the standard flute.