Pronunciation: [dɪfˈə͡ʊkəsɪz] (IPA) 
The word "defocuses" is spelled with a "c" and not a "s" because it is derived from the base word "defocus," which is pronounced with a "k" sound, represented by the phonetic symbol /k/. Adding a suffix such as "es" to "defocus" requires replacing the "k" sound with a "s" sound, represented by the phonetic symbol /s/. However, "c" can also represent the same sound, which is why "defocuses" is spelled with a "c."
The term "defocuses" is a verb derived from the noun "defocus." It refers to the act or process of intentionally adjusting the focus of a lens or other optical device in such a way that it produces a blurred or out-of-focus image. When a lens is defocused, the focal point is deliberately shifted away from the subject, resulting in a decrease in image sharpness and clarity.
In the context of photography or cinematography, defocusing can be used creatively to convey a sense of depth, mystery, or to draw attention to a specific element within the composition. It can also be employed to create a soft, dream-like aesthetic, emphasizing certain colors or shapes while de-emphasizing others. Additionally, defocusing can be used as a technique to intentionally blur the background or foreground, separating the subject from its surroundings and creating a visually pleasing separation of layers.
In a broader sense, "defocuses" can also refer to a divergence or shift of focus from a particular subject or area of interest. This can occur in various contexts, such as in a conversation or debate where attention is redirected or relaxed, resulting in a less clear or precise understanding of a topic.
Overall, "defocuses" describes the intentional act of modifying the focus of an optical device or the redirection of attention, resulting in a blurred image or a less specificity in understanding or perception.
The word "defocuses" is derived from two main components: "de-" and "focus".
The prefix "de-" is of Latin origin and generally implies negation, reversal, or removal. In this case, it suggests a negation or reversal of the concept of focusing.
The word "focus" originates from the Latin term "focus", meaning "hearth" or "fireplace". In the 1660s, the term was adopted in optics to describe the point at which rays of light meet after passing through a lens or converging. "Defocus" therefore refers to the act of causing an image or object to become out of focus, blurred, or less distinct.
With the addition of the suffix "es", which indicates the third-person singular present tense form, "defocuses" is thus formed to describe the action of causing something to become out of focus.
