[peer-ee-uh d-loo-muh-nos-i-tee] /ˈpɪər i ədˌlu məˈnɒs ɪ ti/
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.
noun, Dentistry. 1. the collagenous, fibrous connective tissue between the cementum of the tooth and the alveolus.