Adjacent Words

Progression definitions

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Webster's 1828 Dictionary

PROGRES'SION, n. [L. progressio, progredior.]
1. The act of moving forward; a proceeding in a course; motion onwards.
2. Intellectual advance; as the progression of thought.
3. Course; passage.
4. In mathematics, regular or proportional advance in increase or decrease of numbers; continued proportion, arithmetical or geometrical. Continued arithmetical proportion, is when the terms increase or decrease by equal differences. Thus,
2. 4. 6. 8. 10.
. 8. 6. 4. 2. by the difference 2.
Geometrical proportion or progression, is when the terms increase or decrease by equal ratios. Thus,
2. 4. 8. 16. 32. 64.
64. 32. 16. 8. 4. 2. by a continual multiplication or division by 2.

WordNet (r) 3.0 (2005)

n
1: a series with a definite pattern of advance [syn: progression, patterned advance]
2: a movement forward; "he listened for the progress of the troops" [syn: progress, progression, advance]
3: the act of moving forward (as toward a goal) [syn: progress, progression, procession, advance, advancement, forward motion, onward motion] [ant: retreat]

Merriam Webster's

noun Date: 15th century 1. a sequence of numbers in which each term is related to its predecessor by a uniform law 2. a. the action or process of progressing ; advance b. a continuous and connected series ; sequence 3. a. succession of musical tones or chords b. the movement of musical parts in harmony c. sequence 2c • progressional adjective

Oxford Reference Dictionary

n. 1 the act or an instance of progressing (a mode of progression). 2 a succession; a series. 3 Math. a = arithmetic progression. b = geometric progression. c = harmonic progression. 4 Mus. passing from one note or chord to another. Derivatives: progressional adj. Etymology: ME f. OF progression or L progressio (as PROGRESS)

Webster's 1913 Dictionary

Progression Pro*gres"sion, n. [L. progressio: cf. F. progression.] 1. The act of moving forward; a proceeding in a course; motion onward. 2. Course; passage; lapse or process of time. I hope, in a short progression, you will be wholly immerged in the delices and joys of religion. --Evelyn. 3. (Math.) Regular or proportional advance in increase or decrease of numbers; continued proportion, arithmetical, geometrical, or harmonic. 4. (Mus.) A regular succession of tones or chords; the movement of the parts in harmony; the order of the modulations in a piece from key to key. Arithmetical progression, a progression in which the terms increase or decrease by equal differences, as the numbers [lbrace2]2, 4, 6, 8, 1010, 8, 6, 4, 2[rbrace2] by the difference 2. Geometrical progression, a progression in which the terms increase or decrease by equal ratios, as the numbers [lbrace2]2, 4, 8, 16, 32, 6464, 32, 16, 8, 4, 2[rbrace2] by a continual multiplication or division by 2. Harmonic progression, a progression in which the terms are the reciprocals of quantities in arithmetical progression, as 1/2, 1/4, 1/6, 1/8, 1/10.

Webster's 1913 Dictionary

the motion of the point A, of the foot of the perpendicular PA, when P moves uniformly in the circumference of a circle, and PA is drawn perpendicularly upon a fixed diameter of the circle. This is simple harmonic motion. The combinations, in any way, of two more simple harmonic motions, make other kinds of harmonic motion. The motion of the pendulum bob of a clock is approximately simple harmonic motion. Harmonic proportion. See under Proportion. Harmonic series or progression. See under Progression. Spherical harmonic analysis, a mathematical method, sometimes referred to as that of Laplace's Coefficients, which has for its object the expression of an arbitrary, periodic function of two independent variables, in the proper form for a large class of physical problems, involving arbitrary data, over a spherical surface, and the deduction of solutions for every point of space. The functions employed in this method are called spherical harmonic functions. --Thomson & Tait. Harmonic suture (Anat.), an articulation by simple apposition of comparatively smooth surfaces or edges, as between the two superior maxillary bones in man; -- called also harmonic, and harmony. Harmonic triad (Mus.), the chord of a note with its third and fifth; the common chord.

Collin's Cobuild Dictionary

(progressions) 1. A progression is a gradual development from one state to another. Both drugs slow the progression of HIV, but neither cures the disease... = development N-COUNT: usu sing, usu with supp 2. A progression of things is a number of things which come one after the other. (FORMAL) ...a progression of habitats from dry meadows through marshes to open water. N-COUNT: N of n

Soule's Dictionary of English Synonyms

n. 1. Advancement, advance, progress. 2. Course, passage, lapse or process of time. 3. Series, gradation, rate.

Moby Thesaurus

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