a tall North American fern, Matteuccia struthiopteris, with large mature leaves that resemble ostrich plumes, a popular landscaping plant whose curled new leaves, called fiddleheads, are eaten as a vegetable.
[im-per-fek-tuh] /ˌɪm pərˈfɛk tə/ noun, Pathology. 1. a rare hereditary disease in which abnormal connective tissue development leads to fragile bones subject to fracture. /ˌɪmpəˈfɛktə/ noun 1. a hereditary disease caused by a collagen abnormality, causing fragility of the skeleton which results in fractures and deformities Also called brittle bone syndrome osteogenesis imperfecta osteogenesis im·per·fec·ta […]
osteogen os·te·o·gen (ŏs’tē-ə-jən, -jěn’) n. The substance forming the inner layer of the periosteum, from which new bone is formed.
[os-tee-uh-jen-uh-sis] /ˌɒs ti əˈdʒɛn ə sɪs/ noun 1. the formation of bone. /ˌɒstɪəʊˈdʒɛnɪsɪs/ noun 1. the formation of bone osteogenesis os·te·o·gen·e·sis (ŏs’tē-ə-jěn’ĭ-sĭs) n. Formation and development of bony tissue. Also called osteogeny.
[os-tee-ak] /ˈɒs tiˌæk/ noun, plural Ostyaks (especially collectively) Ostyak. 1. . /ˈɒstɪˌæk/ noun 1. (pl) -aks, -ak. a member of an Ugrian people living in NW Siberia E of the Urals 2. the language of this people, belonging to the Finno-Ugric family: related to Hungarian