| DIAPHOTOTROPY | • DIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light. |
| ODONTORNITHES | • ODONTORNITHES n. fossil birds with teeth. |
| ORTHODONTISTS | • orthodontists n. Plural of orthodontist. • ORTHODONTIST n. one who practises orthodontics. |
| ORTHOPAEDISTS | • orthopaedists n. Plural of orthopaedist. • ORTHOPAEDIST n. a specialist in orthopaedy, also ORTHOPEDIST. |
| ORTHOPTEROIDS | • orthopteroids n. Plural of orthopteroid. • ORTHOPTEROID n. a member of the Orthoptera, cockroaches. |
| PHOSPHORETTED | • PHOSPHORETTED adj. combined with phosphorus, also PHOSPHURETTED. |
| PHOTODETECTOR | • photodetector n. Any device used to detect electromagnetic radiation. • PHOTODETECTOR n. any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action. |
| PHOTOPRODUCTS | • photoproducts n. Plural of photoproduct. • PHOTOPRODUCT n. a product of a photochemical reaction. |
| PROSTHODONTIA | • PROSTHODONTIA n. the provision of false teeth, also PROSTHODONTICS. |
| PROTOCHORDATE | • protochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata. • PROTOCHORDATE n. a member of the Protochordata. |
| ROADWORTHIEST | • ROADWORTHY adj. able to be used on a road. |
| STROPHIOLATED | • strophiolated adj. Synonym of strophiolate. • STROPHIOLATED adj. having strophioles, caruncles, also STROPHIOLATE. |
| THROTTLEHOLDS | • throttleholds n. Plural of throttlehold. • THROTTLEHOLD n. a vicious, strangling, or stultifying control. |
| THYROIDECTOMY | • thyroidectomy n. (Surgery) The surgical removal of part or all of the thyroid gland. • THYROIDECTOMY n. the surgical removal of the thyroid gland. |
| TRICHOTOMISED | • trichotomised v. Simple past tense and past participle of trichotomise. • TRICHOTOMISE v. to divide into three, also TRICHOTOMIZE. |
| TRICHOTOMIZED | • trichotomized v. Simple past tense and past participle of trichotomize. • TRICHOTOMIZE v. to divide into three, also TRICHOTOMISE. |
| ULTRAORTHODOX | • ultraorthodox adj. Very orthodox, chiefly among Jewish sects. • ultra-Orthodox adj. (Of a Jew) Very strictly observant; Haredi; being either Hasidic or Litvish (Misnagdic). • ULTRAORTHODOX adj. extremely orthodox. |