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n. pl. tri·chot·o·mies
1. Division into three parts or elements.
2. A system based on three parts or elements, especially the theological description of humans as consisting of body, soul, and spirit.

[New Latin trichotomia : Greek trikha, in three parts; see trei- in Indo-European roots + New Latin -tomia, -tomy.]

tri·chot′o·mous adj.
tri·chot′o·mous·ly adv.
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References in periodicals archive ?
He further said that the government is disruption the trichotomous force.
Therefore, they proposed the concept of "approach-avoidance" and further divided the performance goal orientation into "performance-approach" and "performance-avoidance" to form a trichotomous achievement-goal framework with the existing mastery goal.
Based on the numbers of publicly available physician quality reports and the included measures for specific chronic conditions (Table 1), we construct an ordered trichotomous measure for each respondent for each time: PQI not available=0; PQI available but not applicable= 1; and PQI both available and applicable=2.
The trichotomous view reached a peak in the nineteenth century in works such as John B.
Later, the distinction of approach and avoidance achievement goals has been added to the model, rendering a trichotomous goal framework as a mastery goal, a performance-approach goal, and a performance-avoidance goal (Elliot & Harackiewicz, 1996).
Self-determination was also measured with a single item ("I contact the school or teacher when I disagree with the child's school") and was measured on a trichotomous scale (recoded 1 = don't ever disagree, 2 = no, 3 = yes).
Using this information, the following trichotomous variables were created: "non-IDU," "recent IDU" (if the participant had injected drugs in the year prior to study entry), and "remote IDU" (if the participant reported IDU but claimed additionally that such use had not taken place in the year prior to study enrollment).
Perceptions of competence, implicit theory of ability, perception of motivational climate, and achievement goals; A test of the trichotomous conceptualization of endorsement of achievement motivation in the physical education setting.
Because the variable is trichotomous, the multinomial logistic regression model is estimated.
Academic networks in a trichotomous categorization of university spinouts.
Comparing dichotomous and trichotomous approaches to Achievement Goal Theory: An example using motivational regulations as outcome variables.
Excess weight was regarded as a trichotomous exposure to excess body weight because three categories of exposure were involved: 1) no excess weight, 2) overweight (prevalence EOW), and 3) obesity (prevalence EOB).