The phrase "a viable size" is correct and usable in written English.
It can be used when discussing the appropriateness or practicality of a particular size in various contexts, such as business, design, or manufacturing.
Example: "After reviewing the options, we determined that a viable size for the product would be 12 inches in diameter."
Alternatives: "an appropriate size" or "a suitable size".
Palmerston was a philhellene; but by the time he became foreign secretary the only question was whether Greece should be a viable size, wholly independent of Turkey and under the surveillance of Britain, France, and Russia.
When the clams have reached a viable size, they are put back into controlled silos in the sea, where within six months they grow to marketable size -- in this case about two to three inches, or less than half the size of surf clams found in the ocean.
It is initiated by a seed body above a minimum viable size, around which a multi-zoned, mobile, reaction front develops.
The scaling of thin film photovoltaics to a commercially viable size relies on the series connection of multiple small cells into modules.
It's traded far more than elephant ivory, rhino horn, and pangolin scales put together, and is often called the "ivory of the forest". Conservationists are so concerned about the fate of rosewood in part because it takes many decades to grow to a commercially viable size and centuries to reach full maturity.
We first verify that haploid spore size affects the viability of the resulting diploids in high- or low-glucose environments, and we then determine whether spores of a more viable size are more likely to mate.
My questions: What is the minimum economical viable size for a Seawater Greenhouse?
Nonetheless, a viable class size is only part of what makes for the success of an online class.
Randomisation is only undertaken once a group of 20 participants in a wave (figure 1) have been identified, since this is the minimum number that would constitute a viable group size.
Maladaptations of newly rare taxa may include defenses geared toward specialized rather than generalized enemies, or an overreliance on specialist mutualists that cannot maintain a viable population size at their host's new, low density (Eckert et al. 2010).
An analysis of 2010 livestock data also indicated that in the Gobi Desert, which is relatively close to our study region, a high proportion of pastoral herds were smaller than the minimum viable size (Addison and Brown 2014).
