The word 'potencies' is correct and can be used in written English.
It is the plural form of 'potency', which means power, strength, or effectiveness. Example: The various potencies of the medicine have been tested in clinical trials. In this sentence, 'potencies' refers to the different levels or degrees of effectiveness that the medicine has been found to have in the trials.
The vaccination procedure involved two inoculations at intervals of 12 days with vaccines of different potencies.
In still other sacrifices at planting time or in time of famine, the blood of the victim animal or human was let upon the ground and its flesh buried in the soil to fertilize the earth and recharge its potencies.
Another distinctive feature of the first-fruits offering is that it serves to replenish the sacred potencies of the earth depleted by the harvest and to ensure thereby the continued regeneration of the crop.
ED50 values provide a useful way of comparing the potencies of drugs that produce physiologically similar effects at different concentrations.
Medicine man, also called medicine person or healer, member of an indigenous society who is knowledgeable about the magical and chemical potencies of various substances (medicines) and skilled in the rituals through which they are administered.
The vital energies may tend to operate in a manner that leads toward decline, loss of potencies and fertility, and death; they may also, however, tend to operate in an opposite manner that leads toward excess, increase and perversion of potencies, and chaos.
It seemed to us that, nationally, its potency was weakening, its bright colours fading, while for us even 30 years on, it was somehow lodged within our DNA as something unresolved and painful.
"The vaccine was also capable of provoking an immune response, although the overall potency of this response was a tad disappointing.
Phoenix's character finds he only enjoys life (and regains his sexual potency) once he rejects many of his own teachings and embarks on morally suspect – if well-intentioned – mission.
These are intensely technologised sites, places where the shape of action and possibility are profoundly conditioned by what I call the "dark weather" of the network – that layer of information that swirls around the physical environment, intangible to the unaided human sensorium but possessing terrific potency.
But party insiders also admit that the potency of the Tory message about the SNP threat stemmed from pre-existing fears about Labour on the economy, an issue that Miliband did not address.
