Wiktionary (0.00 / 0 votes) Rate this definition: infinity (Noun). Limitlessness, unlimitedness, something which is growing without limits or bounds. infinity (Noun). A number that has an infinite numerical value that cannot be counted.
prodrome - an early symptom that a disease is developing or that an attack is about to occur. prodroma. symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease. Translations.
The zone of proximal development, often abbreviated as ZPD, is the difference between what a learner can do without help and what he or she can do with help.It is a concept introduced, yet not fully developed, by Soviet psychologist Lev Vygotsky (1896â1934) during the last ten years of his life.Vygotsky stated that a child follows an adult's example and gradually develops the ability to do certain tasks without help.ince Vygotsky's original conception, the definition for the zone of proximal development has been expanded and modified. The zone of proximal development is an area of learning that occurs when a person is assisted by a teacher or peer with a skill set higher than that of the subject.