| PTERIN | • pterin n. (Organic chemistry) A ketonic amide derivative of pteridine responsible for some of the colouring in… • PTERIN n. (Greek) any of a group of substances occurring in butterfly wings. |
| PTERINS | • pterins n. Plural of pterin. • PTERIN n. (Greek) any of a group of substances occurring in butterfly wings. |
| CHAPTERING | • chaptering v. Present participle of chapter. • CHAPTER v. to divide a book into main sections. |
| SCEPTERING | • sceptering v. Present participle of scepter. • SCEPTER v. to invest with royal authority, also SCEPTRE. |
| AMINOPTERIN | • aminopterin n. (Pharmacology) A 4-amino analog of folic acid used as a chemotherapy drug. • AMINOPTERIN n. a rodenticide. |
| AMINOPTERINS | • aminopterins n. Plural of aminopterin. • AMINOPTERIN n. a rodenticide. |
| XANTHOPTERIN | • xanthopterin n. A yellow crystalline solid that occurs mainly in the wings of butterflies and in the urine of mammals… • XANTHOPTERIN n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERINE. |
| HELICOPTERING | • helicoptering v. Present participle of helicopter. • helicoptering n. Transport by helicopter. • HELICOPTER v. to travel by helicopter. |
| XANTHOPTERINE | • xanthopterine n. Alternative form of xanthopterin. • XANTHOPTERINE n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERIN. |
| XANTHOPTERINS | • xanthopterins n. Plural of xanthopterin. • XANTHOPTERIN n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERINE. |
| XANTHOPTERINES | • XANTHOPTERINE n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERIN. |