What's the difference between actinium and actinoid?
Actinium
Definition:
(n.) A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.
Example Sentences:
(1) Among workers who had a radiation record 3742 (40%) were also monitored for possible internal exposure to plutonium, 3044 (32%) to uranium, 1562 (17%) to tritium, 638 (7%) to polonium, and 281 (3%) to actinium.
Actinoid
Definition:
(a.) Having the form of rays; radiated, as an actinia.
Example Sentences:
(1) Incidental infections of Thysanosoma actinoides, Orthostrongylus macrotis, and Taenia omissa were recorded.
(2) Menaquinones were also found in the actinomycetes (except Actinomyces odontolyticus and Bifidobacterium bifidum which did not produce any quinones) and in Protaminobacter alboflavus ATCC 8458, the so-called Actinobacillus actinoides ATCC 15900 and Noguchia granulosis NCTC 10559.
(3) Enzyme activity of H. somnus isolates were similar to organisms identified as Histophilus ovis, Haemophilus agni and strains UQV of Actinobacillus actinoides and Actinobacillus seminis but was clearly different from isolates of Pasteurella haemolytica, Pasteurella multocida, Bordetella bronchiseptica and group EF4.
(4) This suggests that these filaments may be actinoid and form part of a contractile system.
(5) The strains were divided into two groups: actinoid (N. asteroides, N. flavescens) and bacterium-like (N. rubropertincta, N. flava, N. ucrainica, N. salmonicolor, N. rubra, N. erythropolis, Nocardia ssp).
(6) Chloropolysporins A, B and C possessed all the same new aglycone composed of actinoidic acid, 3-chloro-4-hydroxyphenylglycine, N-methyl-p-hydroxyphenylglycine and vancomycinic acid.