seropositive

S1E1R1O1P3O1S1I1T1I1V4E1

adjective

Of blood serum, testing positive for a given pathogen, especially HIV (HIV positive).

Opposite
seronegative
OriginEnglish positive ← Old French positif ← Latin positivus →
UncommonScrabble 17
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Meanings

adjectiveseropositive (not comparable)
  1. not comparableOf blood serum, testing positive for a given pathogen, especially HIV (HIV positive).

    Antonyms: seronegative

  2. not comparableOf a person or animal, having seropositive blood serum.

    They offer individual and group counseling to seropositive individuals, street outreach education, and an educational workshop series for people at risk.

    1990 April 21, Robb Johnson, “AIDS Education in Guatemala”, in Gay Community News, page 4
    1 more example

    Other tests (marked ‘+ +’ in Table 2C.8) are more sensitive in that they produce higher antibody titres but they do not detect substantially more seropositive individuals in a population.

    2004, Paul D. Griffiths, “Cytomegalovirus”, in Arie J. Zuckerman et al., editors, Principles and Practice of Clinical Virology, 5th edition, John Wiley and Sons, →ISBN, page 108

    Antonyms: seronegative

nounseropositive (plural seropositives)

plural seropositives

  1. A person with such blood serum.

Synonyms & antonyms

adjectiveOf blood serum, testing positive for a given pathogen, especially HIV (HIV positive).

Opposite
seronegative

adjectiveOf a person or animal, having seropositive blood serum.

Opposite
seronegative

Origin

  1. Proto-Indo-European*ser-
  2. Proto-Indo-European*sér-o-
  3. Proto-Italic*serom
  4. Latinserum
  5. Englishserum
  6. Englishsero-
  7. Proto-Indo-European*h₂ep
  8. Proto-Indo-European*h₂epó
  9. Proto-Indo-European*h₂pó
  10. Proto-Italic*po
  11. Proto-Indo-European*teḱ-
  12. Proto-Indo-European*tḱéytibf.
  13. Proto-Indo-European*tḱey-
  14. Proto-Indo-European*tḱinéti
  15. Proto-Italic*sinō
  16. Proto-Italic*pozinō
  17. Latinpōnō
  18. Latinīvus
  19. Latinpositivus
  20. Old Frenchpositif
  21. Englishpositive
  22. Englishseropositive

From sero- + positive.

Full word history & related roots →

Translations

Catalan seropositiu
  • seropositiutesting positive for a given pathogen
Finnish seropositiivinen
  • seropositiivinentesting positive for a given pathogen
French séropositif
  • séropositiftesting positive for a given pathogen
Italian sieropositivo
  • sieropositivotesting positive for a given pathogen
Polish seropozytywny
  • seropozytywnytesting positive for a given pathogen
Portuguese seropositivo, soropositivo
  • seropositivotesting positive for a given pathogen
  • soropositivotesting positive for a given pathogen
Spanish seropositivo
  • seropositivotesting positive for a given pathogen
Cite this entry
APA

seropositive. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/seropositive

MLA

“seropositive.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/seropositive. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “seropositive,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/seropositive.

Source: seropositive on Wiktionary, CC BY-SA 4.0.