| APOSTOLATES | • apostolates n. Plural of apostolate. • APOSTOLATE n. the office of an apostle. |
| BOTTLENOSES | • bottlenoses n. Plural of bottlenose. • bottle-noses n. Plural of bottle-nose. • BOTTLENOSE n. a kind of whale or dolphin. |
| CETOLOGISTS | • cetologists n. Plural of cetologist. • CETOLOGIST n. one versed in cetology. |
| ETHOLOGISTS | • ethologists n. Plural of ethologist. • ETHOLOGIST n. one who studies or writes upon ethology. |
| ETIOLOGISTS | • etiologists n. Plural of etiologist. • ETIOLOGIST n. a student of etiology, also AETIOLOGIST. |
| FETOLOGISTS | • fetologists n. Plural of fetologist. • FETOLOGIST n. one who studies the fetus. |
| OSTEOBLASTS | • osteoblasts n. Plural of osteoblast. • OSTEOBLAST n. one of the protoplasmic cells from or around which the matrix of the bone is developed. |
| OSTEOCLASTS | • osteoclasts n. Plural of osteoclast. • OSTEOCLAST n. an instrument used in osteoclasis. |
| OSTEOLOGIST | • osteologist n. A scientist or physician whose speciality is osteology. • OSTEOLOGIST n. one who practises osteology. |
| OSTEOPLASTY | • osteoplasty n. (Surgery) Surgery to repair, modify or graft bone or bony structures. • OSTEOPLASTY n. plastic surgery on bone. |
| OTOPLASTIES | • otoplasties n. Plural of otoplasty. • OTOPLASTY n. cosmetic surgery on the ears. |
| PESTOLOGIST | • pestologist n. One who studies pestology. • PESTOLOGIST n. one who studies pestology. |
| PROTOSTELES | • protosteles n. Plural of protostele. • PROTOSTELE n. a stele in which the vascular tissue forms a solid core, with centrally placed xylem surrounded by phloem. |
| SITOSTEROLS | • sitosterols n. Plural of sitosterol. • SITOSTEROL n. any of several sterols widespread in plant products. |
| TELEOSTOMES | • teleostomes n. Plural of teleostome. • TELEOSTOME n. a fish with membrane bones in the skull, jaws etc., as with any ordinary fish except skates and rays. |
| THEOLOGISTS | • theologists n. Plural of theologist. • THEOLOGIST n. a theologian. |
| TOOTHSHELLS | • toothshells n. Plural of toothshell. • tooth␣shells n. Plural of tooth shell. • TOOTHSHELL n. any species of Dentalium and allied genera having a tooth-shaped shell. |