progression

n. முன்னேற்றம், தொடர்முறை நிகழ்ச்சி, (கண.) படிமுறைவரிசை, (இசை.) சுரங்களின் இசைவுப்படி வரிசை.

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Pro*gres"sion, n. Etym: [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.) Defn: Regular or proportional advance in increase or decrease of numbers; continued proportion, arithmetical, geometrical, or harmonic. 4. (Mus.) Defn: 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 2, 4, 6, 8, 1010, 8, 6, 4, 2 -- Geometrical progression, a progression in which the terms increase or decrease by equal ratios, as the numbers 2, 4, 8, 16, 32, 6464, 32, 16, 8, 4, 2 -- Harmonic progression, a progression in which the terms are the reciprocals of quantities in arithmetical progression, as