| 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. |
| 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. |
| pick1 |
to choose from a group. [9 definitions] |
| pick2 |
a sharp, pointed tool used for digging or breaking up rocks or other hard substances. |
| pickax |
a pick that has one pointed end and a blade that is shaped liked a chisel on the other end. |
| pickerel |
a fish that is related to pike. Pickerel are used for food or sport. |
| picket |
a pointed post fixed into the ground, used to make a fence or hold something in place. [3 definitions] |
| pickle |
a cucumber or another vegetable or fruit that has been preserved in salt water, vinegar, and seasonings. [2 definitions] |
| pick on |
(informal) to treat someone in a mean way, either with words or in a physical way. |
| pick out |
to choose. |
| pickpocket |
a person who steals from pockets or purses in crowded or public places. |