Etymograph

English

defectology

Defectology comes from Ancient Greek λόγος ‘that which is said: word, sentence, speech,…’, and goes back to Proto-Indo-European *leǵ- ‘to gather, collect, with derivatives meaning…’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*leǵ-1‘to gather, collect, with derivatives meaning to speak by carefully selecting one's words’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*lóǵos1reconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*lógos1reconstructed
  4. Ancient Greekc. 800–300 BCEλόγος1lógos‘that which is said: word, sentence, speech, story, debate, utterance, argument’
  5. Englishearliest quotation 2000defectology1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English defectology
  2. Earliest quotation in Wiktionary’s entry: 2000, Jan de Groof: “Training in orthopedagogics started as a global course without…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*leǵ-Wiktionary, English defectology‘to gather, collect, with derivatives meaning to speak by carefully selecting one's words’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*lóǵosWiktionary, English defectologyreconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*lógosWiktionary, English defectologyreconstructed
  4. Ancient Greekc. 800–300 BCEλόγοςWiktionary, English defectologylógos‘that which is said: word, sentence, speech, story, debate, utterance, argument’
  5. Englishearliest quotation 2000defectologyWiktionary, English defectology. Earliest quotation in Wiktionary’s entry: 2000, Jan de Groof: “Training in orthopedagogics started as a global course without…”

Linked words

through Proto-Indo-European *leǵ- ‘to gather, collect, with derivatives meaning…’

election, collection, lesson, technology, elite, eligible, select, elegant, collective, collect, legion, coil, elect, negligence, catalogue, negligible, negligent, leach, diligent, lexicon, lexical, cull, epilogue, astrology, legation, alexia, lignite, lexis, lignin, cosmology, dialectical, dialectic, gynecologist, ineligibility, dialogic, 146 more

through Proto-Hellenic *lógos

archaeological, pathological, astrological, etymology, homologous, pathophysiology, psychopathology, neurophysiology, bacteriological, histopathology, 100 more

through Ancient Greek λόγος ‘that which is said: word, sentence, speech,…’

logic, apology, trilogy, analogy, sociology, terminology, logos, physiology, pathology, monologue, logistic, prologue, archaeologist, pathologist, eulogy, epistemology, entomology, etiology, apologia, syllogism, bacteriology, bacteriologist, 109 more

Today it means

noun The training of teachers of handicapped children.

Sources

Sources: Wiktionary, “defectology”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *leǵ- / defectology

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