Not a Cloud in Sight

Cloud

In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, ice crystals, or other particles, suspended in the atmosphere of a planetary body or similar space. Water, primarily, comprises the droplets and crystals. On Earth, clouds are formed as a result of saturation of the air when it is cooled to its dew point, or when it gains sufficient moisture, usually in the form of water vapor, from an adjacent source to raise the dew point to the ambient temperature.

Visual perception

Visual perception is the ability to detect light and use it to form an image of the surrounding environment. Photodetection without image formation is classified as light sensing. In most vertebrates, visual perception can be enabled by photopic vision or scotopic vision, with most vertebrates having both. Visual perception detects light (photons) in the visible spectrum reflected by objects in the environment or emitted by light sources. The visible range of light is defined by what is readily perceptible to humans, though the visual perception of non-humans often extends beyond the visual spectrum. The resulting perception is also known as vision, sight, or eyesight. The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in linguistics, psychology, cognitive science, neuroscience, and molecular biology, collectively referred to as vision science.

not

Symbol

1. ISO 639-3 language code for Nomatsiguenga.

Adverb

1. Negates the meaning of the modified verb.
2. To no degree.

cloud

Noun

1. A visible mass of water droplets suspended in the air.
2. Any mass of dust, steam or smoke resembling such a mass.

Verb

1. To become foggy or gloomy, or obscured from sight.
2. To overspread or hide with a cloud or clouds.

sight

Noun

1. The sense or faculty by which objects are perceived through the agency of light; the sense by which we see.
2. An act, instance, opportunity or possibility of seeing; the perception of objects by the eye; view (see also idiomatic expressions such as in sight, out of sight, catch sight of, etc.)

Verb

1. To see; to get sight of (something); to register visually.
2. To observe through, or as if through, a sight, to check the elevation, direction, levelness, or other characteristics of, especially when surveying or navigating.