Definitions for "Sample Size"
The sample size is the number of units included in a sample. The larger the sample size, the more information we have about the population.
This is the number of bits used to store each sample (an 8-bit sample records 256 levels of sound; a 16-bit sample records 65,536 levels)
The number of participants in a research study. The larger the sample size in a research study, the more power the study has to detect an association between exposure and a health effect.
The amount of data the experimenter needs to answer a statistical question. Varies with alpha risk, beta risk & the associated difference to be detected.