American Heritage® Dictionary of the English Language, Fourth Edition
- n. A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices, especially clocks. Also called simple pendulum.
- n. Something that swings back and forth from one course, opinion, or condition to another: the pendulum of public opinion.
Century Dictionary and Cyclopedia
- n. Anything that hangs down from a point of attachment and is free to swing.
- n. In mech., a body so suspended from a fixed point as to move to and fro by the alternate action of gravity and its acquired energy of motion. The time occupied by a single oscillation or swing is counted from the time of the descent of the pendulum from the highest point on one side till it attains the highest point on the opposite side. This time is called the period of oscillation of the pendulum. A simple pendulum in the mechanical sense is a material particle suspended by a weightless rod and moving without friction. A single weight attached by a string, etc., approximates to an ideal simple pendulum. The period of oscillation of a simple pendulum in vacuo is
- n. A chandelier or lamp pendent from a ceiling.
- n. A guard-ring of a watch and its attachment, by which the watch is attached to a chain.
- n. A pendulum that at some point of its path closes a circuit, this in turn either reporting the beats of the pendulum at distant stations for time-comparisons, or directly controlling a number of clocks. See electric clock, under clock.
- n. See the adjectives.
- n. A pump in which the reciprocating motion of the piston is controlled by a pendulum.
- n. A pump the handle of which swings on either side of its center of suspension.
- n. A pendulum consisting of a spherical bob suspended from a cord or wire.
- n. A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices such as clocks.
GNU Webster's 1913
- n. A body so suspended from a fixed point as to swing freely to and fro by the alternate action of gravity and momentum. It is used to regulate the movements of clockwork and other machinery.
- n. an apparatus consisting of an object mounted so that it swings freely under the influence of gravity
- Neuter of Latin pendulus, "hanging". (Wiktionary)
- New Latin, probably from Italian pendolo, pendulous, pendulum, from Latin pendulus, hanging; see pendulous. (American Heritage® Dictionary of the English Language, Fourth Edition)
“That late Michael Halliday goal at the Oval on Good Friday has swung the title pendulum back in favour of the east-Belfast side - but only just.”
“That's why the pendulum is always swinging, but it's particularly acute, I think, in times and in places that have high stress of citizens.”
“Every time I think the pendulum is at its apex, it keeps on moving to the right anyway.”
“Tolliver's counterexample, which he calls the pendulum case, goes like this: suppose a physics student has learned that from the period of a pendulum (i.e., the time it takes to complete a swing) one can calculate its length and vice versa.”
“The pendulum is rapidly swinging back to the old condition of things.”
“Professor Christopher B. Leimberger states in the "Atlantic" that "signs of physical and social deterioration are spreading" in the suburbs and the "pendulum is swinging back toward urban living.”
“The pendulum is going to swing back from shows starring White House crashers, New Jersey alcoholics, and people dressing up like a banana to make a deal," she says.”
“The pendulum is already starting to swing the other direction.”
“NCIS was perturbed at the end of last season, and the pendulum is slowly returning to status quo.”
“Now the pendulum is swinging more gently, so that there is rest within action and action within rest.”
These user-created lists contain the word ‘pendulum’.
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"In mech., a body so suspended from a fixed point as to move to and fro by the alternate action of gravity and its acquired energy of motion. The time occupied by a single oscillation or swing is c...
pendulum, pendulums, Pendulum, Pendulums, simple pendulum, conical pendulum, simple gravity pe..., Foucault pendulum, Foucault's Pendulum, gridiron pendulum, sound-pendulum, compensation pend... and 33 more...
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words pertaining to the root spe- (hope) with some allegorical liberties.
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