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In $\sqrt {f}$, $f$ is the radicand.

In $\sum g_i$, $g_2$ is a summand.

In $x \times y \times z$, $y$ is a multiplicand.

In: $$\displaystyle \lim_{n \to +\infty} h_n(x)$$ or: $$h(x) \to \ell \quad \text {as} \quad x \to c$$

What's "$h$" called? The limitand?

GFauxPas
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  • "sequence" in the first, and "function" in the second. – vadim123 Nov 18 '14 at 22:26
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    That doesn't convey that I'm taking a limit of it, though. – GFauxPas Nov 18 '14 at 22:27
  • I don't know of any word for that, in either danish (my native tongue) or english. I did understand what you meant when you used it in your answer to that $0^0$ question. – Henrik supports the community Nov 18 '14 at 22:36
  • The function/sequence that we’re taking the limit of – Mathman Feb 19 '23 at 21:57
  • "Summing" "Integrating" "Multiplying" are all verbs with "ing" appended. The "-and" suffix is a gerundive-ifier in Latin which changes the verb into an adjective (which in our usage becomes a noun.) So "summand" is "something to be summed." OTOH, "limit" and "derivative" are nouns, so they don't have gerundive forms. You can try to coin "limitand" or "derivand" but people who know Latin will get upset, and you know how they can be. – B. Goddard Jul 14 '23 at 16:46

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