serology

noun

se·​rol·​o·​gy sə-ˈrä-lə-jē 

si-

: a medical science dealing with blood serum especially in regard to its immunological reactions and properties

also : the testing of blood serum to detect the presence of antibodies against a specific antigen

serological

ˌsir-ə-ˈlä-ji-kəl 

adjective

or serologic

ˌsir-ə-ˈlä-jik 

serologically

ˌsir-ə-ˈlä-ji-k(ə-)lē 

adverb

serologist

sə-ˈrä-lə-jist 

si-

noun

Examples of serology in a Sentence

Recent Examples on the Web

Results from that serology test are expected within the next day or two, Fitter said. — Erika Edwards, NBC news, 13 May 2026

Those cases were discovered using blood, or serology, testing and seem to have been transmitted from sick animals, not people. — Erika Edwards, NBC News, 7 Nov. 2024

In many older cases, the evidence initially was screened using serology, a method that detects the presence of fluid such as semen. — Gina Barton, USA Today, 2 May 2025

What’s the difference between a serology test (like the CDC has) and a PCR test? — Tanya Lewis, Scientific American, 18 May 2026

Word History

Etymology

sero- + -logy, probably after German Serologie

First Known Use

1909, in the meaning defined above

Rhymes for serology

• anthology
• apology
• astrology
• biology
• christology
• chronology
• conchology
• cosmology
• cryptology
• cytology
• doxology
• ecology

Medical Definition

serology

noun

se·​rol·​o·​gy si-ˈräl-ə-jē 

plural serologies

: a medical science dealing with blood serum especially in regard to its immunological reactions and properties

also : the testing of blood serum to detect the presence of antibodies against a specific antigen