| PERIGON | • perigon n. (Geometry) A round angle; a full circle. • perigon n. (Dated) A perianth or a perigonium. • PERIGON n. (Greek) an angle equal to 360 degrees. |
| PERIGONE | • perigone n. (Botany) perianth. • perigone n. In mosses, the involucral bracts of a male flower. • perigone n. (Zoology) A sac surrounding the generative bodies in the gonophore of a hydroid. |
| PERIGONES | • perigones n. Plural of perigone. • PERIGONE n. any organ inclosing the essential organs of a flower, also PERIGONIUM. |
| PERIGONIA | • perigonia n. Plural of perigonium. • PERIGONIUM n. any organ inclosing the essential organs of a flower, also PERIGONE. |
| PERIGONIAL | • perigonial adj. Of or related to the perigonium. • PERIGONIAL adj. of or like a perigone, an organ inclosing the essential organs of a flower; a perianth. |
| PERIGONIUM | • perigonium n. (Botany) The sterile parts of a flower; collectively, the sepals and petals (or tepals); the perianth. • perigonium n. (Botany) The modified leaves around the antheridia in a bryophytic plant. • perigonium n. (Dated, zoology) The wall of the sporosac in a hydroid. |
| PERIGONS | • perigons n. Plural of perigon. • PERIGON n. (Greek) an angle equal to 360 degrees. |
| TRIGON | • trigon n. (Countable, geometry, rare) A triangle. • trigon n. (Countable, historical, music) An ancient triangular harp of Oriental origin which had four strings… • trigon n. (Countable, astrology) A division consisting of three signs. |
| TRIGONAL | • trigonal adj. Having three angles and three sides, triangular. • trigonal adj. (Crystallography) Of or pertaining to a crystal system with three equal and equally inclined but not… • trigonal adj. (Anatomy) Relating to the trigone. |
| TRIGONALLY | • trigonally adv. In a trigonal manner. • TRIGONAL adv. pertaining to or having three angles, also TRIGONIC. |
| TRIGONIC | • trigonic adj. (Rare) Relating to a trigon or triangle. • TRIGONIC adj. pertaining to or having three angles, also TRIGONAL. |
| TRIGONOMETER | • trigonometer n. An instrument for solving plane right-angled figures by inspection. • TRIGONOMETER n. instrument for solving triangles. |
| TRIGONOMETERS | • trigonometers n. Plural of trigonometer. • TRIGONOMETER n. instrument for solving triangles. |
| TRIGONOMETRIC | • trigonometric adj. (Mathematics) of, relating to, or constructed using trigonometry. • TRIGONOMETRIC adj. relating to trigonometry, also TRIGONOMETRICAL. |
| TRIGONOMETRICAL | • trigonometrical adj. Of, pertaining to, or obtained using trigonometry. • TRIGONOMETRICAL adj. relating to trigonometry, also TRIGONOMETRIC. |
| TRIGONOMETRIES | • trigonometries n. Plural of trigonometry. • TRIGONOMETRY n. the study of the properties of triangles and trigonometric functions and of their applications. |
| TRIGONOMETRY | • trigonometry n. (Geometry, mathematical analysis) The branch of mathematics that deals with the relationships between… • TRIGONOMETRY n. the study of the properties of triangles and trigonometric functions and of their applications. |
| TRIGONOUS | • trigonous adj. Trigonal. • TRIGONOUS adj. having a triangular cross-section. |
| TRIGONS | • trigons n. Plural of trigon. • TRIGON n. a figure having three angles; a triangle. |