Homology may refer to:

  • Homology (anthropology), analogy between human beliefs, practices or artifacts owing to genetic or historical connections
  • Homology (biology), any characteristic of biological organisms that is derived from a common ancestor.
  • Homology (chemistry), the relationship between compounds in a homologous series
  • Homology (mathematics), a procedure to associate a sequence of abelian groups or modules with a given mathematical object
  • Homology modeling, a method of protein structure prediction
  • Homology (sociology), a structural 'resonance' between the different elements making up a socio-cultural whole
  • Homology theory, in mathematics

Homologous may refer to:

  • Homologous chromosomes, chromosomes in a biological cell that pair up (synapse) during meiosis
  • Homologous desensitization, a receptor decreases its response to a signalling molecule when that agonist is in high concentration
  • Homologous recombination, genetic recombination in which nucleotide sequences are exchanged between molecules of DNA
  • Homologous series (chemistry), a series of organic compounds having different quantities of a repeated unit
  • Homologous temperature, the temperature of a material as a fraction of its absolute melting point

Homological may refer to:

  • Homological word, a word expressing a property which it possesses itself
  • Homological algebra, a branch of mathematics