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[′vē·ə or ′vī·ə]
A pathway that is etched to allow electrical contact between different layers of a semiconductor device.


(1) By means of, by way of. From Latin for "way" or "path."

(2) (Virtual Interface Architecture) See VI.

(3) (Vertical Interconnect Access) In a printed circuit board, a conducting pathway between two or more substrates (layers). The via is created by drilling through the board at the appropriate place where two or more layers will interconnect and allowing copper to run through the hole. The copper may coat only the sides of the hole or fill the entire hole. See printed circuit board.

(4) (Vertical Interconnect Access) In a chip, a conducting pathway between two or more layers. In a 3D chip, two or more stacked dice are connected via "through-silicon vias" (TSVs) which are pathways that pass completely through the die.

Creating Vias
In the antifuse programmable chip technology, a circuit is closed by turning non-conductive silicon into a conductive via. See antifuse.
References in periodicals archive ?
Potential of visual inspection with acetic acid as a screening test in comparison to conventional papanicolaou smear in detection of colposcopic biopsy proven cervical intraepithelial neoplasia: A tertiary centre experience.
Training for cervical cancer prevention programs in low-resource settings: focus on visual inspection with acetic acid and cryotherapy.
In San Martin, Peru, the Screening and Immediate Attention project (TATI-Tamizaje y Tratamiento Inmediato) employed visual inspection with acetic acid (VIA) for screening, and for those who were positive, VIAM with the AviScope[TM] to confirm the diagnosis prior to treatment with cryotherapy (6).
Eftikhar et al 2005_ Eftikhar Z; Rahimi, P Megheddam; Yarande, F; Brojeride, R: Accuracy of visual inspection with acetic acid (VIA) for early detection of cervical dysplasia in Tehran, Iran;.
Objective: To determine the accuracy of visual inspection with acetic acid in comparison with Pap smear against colposcopic directed biopsy, for detection of pre-cancerous lesion.
This study reports on the organisation and early results of a visual inspection with acetic acid (VIA) screening programme for cervical cancer prevention, which was introduced in 2004.
Visual inspection with acetic acid in the early detection of cervical cancer, 1999; 80:161-3

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