[peer-ee-od-ik, peer-] /ˈpɪər iˈɒd ɪk, ˌpɪər-/
the law that the properties of the elements are periodic functions of their atomic numbers.
Also called Mendeleev’s law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.
Also called Mendeleev’s law. the principle that the chemical properties of the elements are periodic functions of their atomic weights or, more accurately, of their atomic numbers
periodic law n.
The principle that properties of elements recur periodically as atomic numbers increase.
[peer-ee-od-ik, peer-] /ˈpɪər iˈɒd ɪk, ˌpɪər-/ noun, Physics. 1. any motion that recurs in identical forms at equal intervals of time. periodic motion See harmonic motion.
- Periodic neutropenia
periodic neutropenia n. Neutropenia recurring at regular intervals, associated with various types of infectious diseases. Also called cyclic neutropenia.
- Periodic paralysis
periodic paralysis n. A group of diseases marked by episodes of muscular weakness or flaccid paralysis without loss of consciousness, speech, or sensation.
[peer-ee-od-ik, peer-] /ˈpɪər iˈɒd ɪk, ˌpɪər-/ noun 1. a sentence that, by leaving the completion of its main clause to the end, produces an effect of suspense, as in Unable to join the others at the dance because of my sprained ankle, I went to a movie. /ˌpɪərɪˈɒdɪk/ noun 1. (rhetoric) a sentence in which […]