[peer-ee-uh-duh-zey-shuh n] /ˌpɪər i ə dəˈzeɪ ʃən/
an act or instance of dividing a subject into historical eras for purposes of analysis and study.
the act or process of dividing history into periods
the division and categorization of history into periods of time for the purposes of discussion and treatment
periodize ‘divide into periods’ + ‘ation
- Period-luminosity relation
[peer-ee-uh d-loo-muh-nos-i-tee] /ˈpɪər i ədˌlu məˈnɒs ɪ ti/ noun, Astronomy. 1. the relationship between the period of light variation and of the absolute magnitude of Cepheid variable stars.
[per-ee-uh-don-tl] /ˌpɛr i əˈdɒn tl/ adjective, Dentistry. 1. of or relating to the periodontium. 2. of or relating to . 3. of or relating to the . /ˌpɛrɪəˈdɒntəl/ adjective 1. of, denoting, or affecting the gums and other tissues surrounding the teeth: periodontal disease adj. 1848, literally “around the tooth,” from peri- + Greek odon […]
noun 1. any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.
- Periodontal ligament
periodontal ligament n. The connective tissue surrounding the root of a tooth and attaching it to its bony socket. Also called alveolodental ligament, periodontal membrane.