Eigenclass

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A hidden class associated with each specific instance of another class.

    "Singleton methods in Ruby live in a special, hidden class called the singleton class (it used to be referred to as the eigenclass, but singleton class is the current term)."

Example

More examples

"Singleton methods in Ruby live in a special, hidden class called the singleton class (it used to be referred to as the eigenclass, but singleton class is the current term)."

Etymology

From eigen- + class.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.