adjective, noun, verb, -lut⋅ed, -lut⋅ing.| 1. | intricate; complex. |
| 2. | curled or curved inward or spirally. |
| 3. | Botany. rolled inward from the edge, as a leaf. |
| 4. | Zoology. (of shells) having the whorls closely wound. |
| 5. | Geometry. any curve of which a given curve is the evolute. |
| 6. | to roll or curl up; become involute. |
| 7. | to return to a normal shape, size, or state. |