Skip to main content
Elaphe obsoleta

Elaphe obsoleta

9.9
A large not venomous black snake that lives in eastern North America and is often called the black rat snake
  • noun
  • /ɪˈleɪfi ˌɑbˈsoʊlɪtə/
  • Specialized
translation icon : Elaphe obsoleta
  • The Elaphe obsoleta is often found in forests and farmland across the eastern United States.

Examples

  • My biology professor showed us a live Elaphe obsoleta during our herpetology class.

  • Growing up, I was fascinated by the shiny black scales of the Elaphe obsoleta that lived near our home.

  • I saw an Elaphe obsoleta in the garden.

  • The Elaphe obsoleta is often mistaken for other snake species.

  • The Elaphe obsoleta is a large, non-venomous snake commonly found in North America.

  • I spotted a beautiful Elaphe obsoleta coiled around a tree branch during my hike.

  • The Elaphe obsoleta has shiny black scales that help it blend into its environment.

Synonyms

rat snake
vsElaphe obsoleta
  • US
1 5.3

A snake that is not poisonous and eats rats and mice

is a single species within that wider group rather than the whole group
blacksnake
vsElaphe obsoleta
  • US
1 7.4

A large not dangerous black snake found in North America, like a racer or rat snake

is the specific shiny black species within that broader category
black rat snake
vsElaphe obsoleta
  • US
5.3

A large shiny black snake from North America that is not venomous and eats rats and mice

is the scientific name for that same species
pilot blacksnake
vsElaphe obsoleta
  • US
8.1

A large harmless black snake in North America that eats rats

is the scientific name used in formal classification
mountain blacksnake
vsElaphe obsoleta
  • US
7.5

A large shiny black snake found in North American mountains that is harmless to people

is the general species found across various habitats not only mountains
chicken snake
vsElaphe obsoleta
  • US
7.4

A large harmless North American snake that eats birds and eggs

is identified by species identity rather than by diet or prey choice
Elaphe
vsElaphe obsoleta
  • Specialized
9.9

A snake that is not venomous and lives in North America and Eurasia and eats rats and mice

is the single species inside that genus rather than the genus as a whole
genus Elaphe
vsElaphe obsoleta
  • Specialized
9.8

A group of snakes that are not poisonous, like rat snakes, found in North America and Eurasia

is one individual species within that taxonomic genus rather than the whole genus

Surface Forms

Morphology

Elaphe + obsoleta

This is a Latin scientific binomial (genus + species) that functions as a taxonomic label rather than a compositional English phrase. The second element 'obsoleta' is not an English word (and its resemblance to 'obsolete' is misleading), so a B1 learner who knows the constituents would not be able to infer the common meaning 'black rat snake'.

Etymology

Elaphe obsoleta is a scientific name from old languages: Elaphe may come from a Greek word for 'snake' and obsoleta is Latin for 'old' or 'worn out'. So the name gives the idea of a common, long-known black snake we now call the 'black rat snake'.