SIGMOIDAL Meaning and
Definition
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The term "sigmoidal" is an adjective used to describe a shape or curve that resembles the letter "S" or a sigmoid, which is a mathematical function with a characteristic S-shaped graph.
In mathematics and statistics, a sigmoidal curve exhibits a gradual and smooth change between two extreme values, without sudden or abrupt transitions. It starts out slowly, then gradually accelerates, reaches a point of maximum growth, and finally decelerates to approach a second extreme value. This type of curve is often encountered in various branches of science, such as biology, physics, and economics, where it is used to model growth patterns, population dynamics, and diffusion processes.
The term "sigmoidal" can also be used more broadly to describe any gradual, intermediate, or transitional change that occurs in stages or steps. It implies a non-linear progression that is neither strictly increasing nor decreasing. For example, a sigmoidal relationship between two variables in a scientific study suggests that the relationship between them is not linear, but rather follows a more complex pattern.
Overall, "sigmoidal" is a term commonly used in various disciplines to refer to a curved or S-shaped pattern that exhibits a gradual and smooth transition between two extremes, whether describing a mathematical function, a graph, or a broader concept of gradual change.
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Curved like the Greek S; in anat., applied to several structures in the body; in bot., curved in two directions like the letter S, or the Greek S.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for SIGMOIDAL
- aigmoidal
- zigmoidal
- xigmoidal
- digmoidal
- eigmoidal
- wigmoidal
- sugmoidal
- sjgmoidal
- skgmoidal
- sogmoidal
- s9gmoidal
- s8gmoidal
- sifmoidal
- sivmoidal
- sibmoidal
- sihmoidal
- siymoidal
- sitmoidal
- signoidal
Etymology of SIGMOIDAL
The word "sigmoidal" originates from the combination of two root words: "sigmoid" and the suffix "-al".
1. "Sigmoid" comes from the Greek word "σίγμα" (sigma), referring to the Greek letter sigma (Σ) that resembles the letter "S". Sigma represents the letter "S" in the Greek alphabet. The second part of the word, "εἴδος" (eidos), means "form" or "shape". Hence, "sigmoid" essentially means "shaped like the letter S".
2. The suffix "-al" is commonly added to nouns in order to form adjectives. In this case, "-al" is added to "sigmoid" to form "sigmoidal", meaning "pertaining to or having the characteristics of a sigmoid".
Similar spelling words for SIGMOIDAL
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