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 | ||