genealogy

noun

ge·​ne·​al·​o·​gy ˌjē-nē-ˈä-lə-jē 

also

-ˈa-lə- 

 also  ˌje-nē-

plural genealogies

1

: an account of the descent of a person, family, or group from an ancestor or from older forms

2

: regular descent of a person, family, or group of organisms from a progenitor (see progenitor sense 1) or older form : pedigree

3

: the study of family ancestral lines

4

: an account of the origin and historical development of something

genealogical

ˌjē-nē-ə-ˈlä-ji-kəl 

ˌje-nē-

adjective

genealogically

ˌjē-nē-ə-ˈlä-ji-k(ə-)lē 

ˌje-nē-

adverb

Synonyms

• ancestry
• lineage
• pedigree
• family

Examples of genealogy in a Sentence

They've been researching their genealogies.

has a distinguished genealogy that traces back to William the Conqueror

Recent Examples on the Web

Transcripts, grammars, vocabularies, dictionaries, glyph studies, botanical studies, commentaries, articles, editions of codices, correspondence, maps, charts, drawings, photographs, Maya Society materials, genealogies of Maya families, and Mayan glyphs on moveable type. —The Editors, JSTOR Daily, 12 Sep. 2025

In 2019, the GBI — working with local law enforcement and forensic-genealogy firms — built a family tree for the child. —Chris Spargo, PEOPLE, 9 Sep. 2025

The Bear Brook murders have become a defining example of how genetic genealogy can solve decades-old mysteries, potentially providing closure to families and advancing justice in similar unsolved cases nationwide. —Adeola Adeosun, MSNBC Newsweek, 8 Sep. 2025

Ramsey, who has criticized the Boulder Police Department's efforts to solve the Christmastime slaying, has offered to fundraise to pay for investigative genetic genealogy, a newer technology that’s been used to solve high-profile cold cases such as the Golden State Killer. —Louis Casiano , Michael Ruiz , Julia Bonavita, FOXNews.com, 7 Sep. 2025

Word History

Etymology

Middle English genealogie, from Anglo-French, from Late Latin genealogia, from Greek, from genea race, family + -logia -logy; akin to Greek genos race

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for genealogy

• aetiology
• anthropology
• archaeology
• archeology
• audiology
• cardiology
• climatology
• cohomology
• cosmetology
• criminology
• demonology
• dermatology

Kids Definition

genealogy

noun

ge·​ne·​al·​o·​gy ˌjē-nē-ˈäl-ə-jē  ˌjen-ē- 

-ˈal-

plural genealogies

1

: the line of ancestors of a person or family or a history of such a line of ancestors

2

: the study of family lines of ancestors

genealogical

ˌjē-nē-ə-ˈläj-i-kəl 

ˌjen-ē-

adjective

genealogically

-k(ə-)lē 

adverb

genealogist

-ˈäl-ə-jəst

-ˈal-

noun