Pronunciation: [fˈʊlske͡ɪl] (IPA) 
The word "fullscale" is spelled with two L's and one S, despite the fact that the prefix "full-" usually only contains one L. This is because the "s" in "fullscale" is a morpheme boundary, separating the two parts of the word. When the prefix "full-" is combined with another word, it often takes on a second L to avoid confusion or mispronunciation. In IPA, "fullscale" is spelled /ˈfʊlskeɪl/, with the stress on the first syllable.
Full-scale is an adjective that refers to something being carried out or done on a large, comprehensive, or extensive level. It implies the complete or maximum extent of an action, project, or operation. The term is frequently used to describe endeavors that involve using all available resources, energy, or capacity to achieve a particular goal.
In the context of a project or operation, full-scale indicates that it is being executed in its entirety or without any limitations or restrictions. It suggests that all necessary steps, components, or aspects are being addressed, leaving no elements or details overlooked. Full-scale projects often involve substantial planning, substantial investment of time and resources, and extensive deployment of manpower or machinery to ensure their successful implementation.
The term can also be used in relation to experiments, tests, or studies conducted on a large or realistic level. Full-scale experiments are those carried out in real-world conditions or settings, allowing accurate observations or conclusions to be drawn.
Furthermore, full-scale can describe the amplitude, intensity, or magnitude of something. For instance, a full-scale disaster refers to a catastrophe or calamity of the highest degree, with significant damage, destruction, or loss.
Overall, whether used to describe projects, operations, experiments, or disasters, full-scale implies a comprehensive or exhaustive endeavor, encompassing all necessary elements or activities on a large or extensive level.
The word "full-scale" is a compound word, comprised of the words "full" and "scale". The etymology of "full" can be traced back to the Old English word "ful", which means "completely, entirely, or wholly". It has roots in the Proto-Germanic language.
On the other hand, the word "scale" comes from the Old French word "escale", meaning "a ladder or staircase". It ultimately finds its origins in the Latin word "scala", meaning "staircase" or "ladder".
When combining "full" and "scale", the term "full-scale" emerged, initially referring to the complete extent, size, or scope of something, often relating to measurement or proportion. Over time, its usage has expanded to signify an all-encompassing or comprehensive approach.
