English adjective: actinoid | |||
| 1. | actinoid having a radial form | ||
| Samples | Starfish are actinoid--that is, they are radially symmetrical. | ||
| Similar | actinomorphic, actinomorphous | ||
| Antonyms | bilaterally symmetrical, zygomorphic, zygomorphous | ||
English noun: actinoid | |||
| 1. | actinoid (substance) any of a series of radioactive elements with atomic numbers 89 through 103 | ||
| Synonyms | actinide, actinon | ||
| Broader (hypernym) | group, grouping | ||