| CORONOGRAPHS | • coronographs n. Plural of coronograph. • CORONOGRAPH n. a special telescope used to observe prominences and the corona around the edge of the sun. |
| COSPONSORING | • cosponsoring v. Present participle of cosponsor. • co-sponsoring v. Present participle of co-sponsor. • COSPONSOR v. to sponsor jointly. |
| MONOPHTHONGS | • monophthongs n. Plural of monophthong. • MONOPHTHONG n. two written vowels representing a single sound, e.g. 'oo', 'oa'. |
| MONOPOLISING | • monopolising v. Present participle of monopolise. • MONOPOLISE v. to get a monopoly of, also MONOPOLIZE. |
| ODONTOGRAPHS | • odontographs n. Plural of odontograph. • ODONTOGRAPH n. an instrument for obtaining curves for gear-teeth. |
| OLIGOPSONIES | • oligopsonies n. Plural of oligopsony. • OLIGOPSONY n. a market situation in which each of a few buyers exerts a disproportionate influence on the market. |
| PHONOLOGISTS | • phonologists n. Plural of phonologist. • PHONOLOGIST n. a student of phonology, the branch of linguistics that deals with systems of sounds. |
| POGONOTOMIES | • POGONOTOMY n. shaving. |
| PONEROLOGIES | • PONEROLOGY n. the theological doctrine of wickedness or evil. |
| POTAMOGETONS | • potamogetons n. Plural of potamogeton. • POTAMOGETON n. a plant of the pondweed genus of water plants, with floating and submerged leaves. |
| PROROGATIONS | • prorogations n. Plural of prorogation. • PROROGATION n. the act of prorogating, postponing a meeting. |
| PYCNOGONOIDS | • pycnogonoids n. Plural of pycnogonoid. • PYCNOGONOID n. a sea-spider, also PYCNOGONID. |
| SPONGICOLOUS | • spongicolous adj. Inhabiting sponges. • SPONGICOLOUS adj. living in association with, usually within, a sponge. |
| SPONGOLOGIES | • SPONGOLOGY n. the study of sponges. |
| SPONGOLOGIST | • spongologist n. One who studies spongology. • SPONGOLOGIST n. one who studies sponges. |
| ZOOSPORANGIA | • zoosporangia n. Plural of zoosporangium. • zoösporangia n. Plural of zoösporangium. • ZOOSPORANGIUM n. a spore case or sporangium bearing zoospores. |