sigmoid

(redirected from sigmoids)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

sigmoid

 [sig´moid]
1. shaped like the letter C or S.
2. the sigmoid colon, the distal part of the colon from the level of the iliac crest to the rectum.

sig·moid

(sig'moyd),
Resembling in outline the letter S or one of the forms of the Greek sigma.
[G. sigma, the letter S, + eidos, resemblance]

sigmoid

/sig·moid/ (sig´moid)
1. shaped like the letter C or S.

sigmoid

(sĭg′moid′) also

sigmoidal

(sĭg-moid′l)
adj.
1. Having the shape of the letter S.
2. Of or relating to the sigmoid colon.

sigmoid

[sig′moid]
Etymology: Gk, sigma, the letter S, eidos, form
1 adj, pertaining to an S shape.
2 n, the sigmoid colon.

sig·moid

(sig'moyd)
Resembling in outline the letter S or one of the forms of the Greek character, sigma.
[G. sigma, the letter S, + eidos, resemblance]

sigmoid

or

sigmoidal

S-shaped.
2. Pertaining to the SIGMOID COLON.

sigmoid

S-shaped.

Sigmoid

The S-shaped curve of the large intestine where the colon joins the rectum.
Mentioned in: Intestinal Polyps

sig·moid

(sig'moyd)
Resembling in outline the letter S or one of the forms of the Greek sigma σ or ς.
[G. sigma, the letter S, + eidos, resemblance]

sigmoid (sig´moid),

adj of or pertaining to an S shape, as in the shape of the pelvic end of the colon prior to its joining the rectum.
sigmoid notch,

sigmoid

shaped like the letter C or S.

sigmoid colon
the distal part of the colon of some species, such as humans, shaped like an S, from the level of the iliac crest to the rectum.
sigmoid curve
an S-shaped curve of the relationship between two variables.
sigmoid flexure of the penis
situated in the bull's penis dorsal and caudal to the scrotal neck.
References in periodicals archive ?
The Logistic and Gompertz nonlinear regressionmodelswereused, in their simple and double sigmoid versions, because even if the information in the literature indicates a pattern of double sigmoid growth, it is necessary to verify if doubling the number of parameters of the model really attains a gain in the quality of fit, thus prevailing the parsimony principle.
In the other criteria presented (Table 1), in both models there is an improvement when comparing the fit of the double sigmoid models with respect to the simple sigmoid.
In this sense, the double sigmoid models are the most suitable to describe the growth curve of coffee berries.
Sigmoid has also agreed to explore opportunities to build on existing Freund Pharmatec and Sigmoid customer-funded drug delivery research projects and related licensing businesses, where applicable, said the company.
In the neuron population, the sigmoid type (2 bits), the tendency connection (16 bits), and 15 connections per neuron were codified.