Partial

[Sarah]

Pertaining to a subordinate portion; as, a compound umbel ismade up of a several partial umbels; a leaflet is often supported bya partial petiole. Partial differentials, Partial differentialcoefficients, Partial differentiation, etc. (of a function of two ormore variables), the differentials, differential coefficients,differentiation etc., of the function, upon the hypothesis that someof the variables are for the time constant.-- Partial fractions (Alg.), fractions whose sum equals a givenfraction.-- Partial tones (Music), the simple tones which in combination forman ordinary tone; the overtones, or harmonics, which, blending with afundamental tone, cause its special quality of sound, or timbre, ortone color. See, also, Tone.

[Donald Trump]

a partial erection. Not quite a hard on or a boner.

[Ernesto]

When someone is able to take their teeth out in order to give fellatio.

[Marquetta]

an almost useless hard-on. the state of a [dick]between flaccid and proudly erect