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1. Movement or change from one member of a continuous series to the next: progression of the disease in stages.
2. A continuous series; a sequence: a progression of limousines. See Synonyms at series.
3. Mathematics A series of numbers or quantities in which there is always the same relation between each quantity and the one succeeding it.
4. Music
a. A succession of tones or chords.
b. A series of repetitions of a phrase, each in a new position on the scale.

pro·gres′sion·al adj.


adj developmentfortschreitend; examinationsaufeinanderfolgend, im Schwierigkeitsgrad ansteigend; training, developmentkontinuierlich (verlaufend or weitergehend)
References in periodicals archive ?
s) supply supplies for advanced clinical research activities in areas of national interest: (1) the diagnosis of potentially lethal or fatal progressional lesions; (2) angioarchitectonics of malignant tumors.
All the blokes we have firing on the vehicles now will have done their driver's, gunner's, or commander's qualification, which enables them to do this sort of progressional shoot.
This transformation is not sudden or galloping, but rather incontrovertibly programmatic and uncompromisingly progressional.
We need that same focus on progressional development and quality and strength of leadership in the secondaries.