californium-252
An isotope of californium, 25298Cf, with a half-life of 2.6 yearsAn isotope of californium, 25298Cf, with a half-life of 2.6 years; it is popular as a source of neutrons.
Meaning
1 senses(uncountable)An isotope of californium, 25298Cf, with a half-life of 2.6 years; it is popular as a source of neutrons.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable