liminal

Of or pertaining to an entrance or threshold.

[W]ith the utmost strictness, we excommunicate digamists, as bringing infamy upon the Paraclete by the irregularity of their discipline. The selfsame liminal limit we fix for adulterers also and fornicators; dooming them to pour forth tears barren of peace, and to regain from the church no ampler return than the publication of their disgrace.

There is a reminiscence, which comes and goes, of Mexican words, of Mexican turns of speech and puns. It is a murmur that wanders in the liminal part of his soul, but the writer [Ramón del Valle-Inclán] lets it be felt with full consciousness of what he is doing.

Pertaining to or in a state that is in-between or transitional between two (or more) other states, while belonging to neither; pertaining to or in a state such as to be neither definitively in a particular other state or category nor defini

Of or pertaining to a beginning or first stage of a process.

If it be assumed […] (2) that the imperceptible value which it [resistance] finally attains is equal to the liminal intensity of the stimulus; and (3) that the intensity of the sensation is proportionate to the magnitude of the area of the circle of irradiation,—the same relation between strength of stimulus, liminal intensity, and intensity of sensation is found as is expressed by 'Fechner's formula' (Maassformel).

Every stimulus must reach a certain intensity before any appreciable sensation results. This point is known as the threshold or liminal intensity.