One of the mysteries of the English language finally explained.
1Situated nearer to the center of the body or the point of attachment.‘the proximal end of the forearm’The opposite of distal
- ‘Approximately one third of polyps and one half of colorectal cancers occur proximal to the splenic flexure.’
- ‘The needle enters just proximal to the first metacarpal on the extensor surface.’
- ‘The small bowel is of narrow caliber distal to the meconium plug and dilated proximal to the meconium plugs.’
- ‘The nerve recombined also beyond the tendon and was subject to compression, proximal to the pisiform bone.’
- ‘In all patients, the injection was administered proximal to the carpal tunnel.’
- 1.1Geology Relating to or denoting an area close to a center of a geological process such as sedimentation or volcanism.Often contrasted with distal
- ‘The precipitates are now difficult to locate and were not found in our recent shallow cores through the proximal sinter terrace.’
- ‘If it was originally present, the proximal part of this onlapping succession has since been removed by erosion.’
- ‘The shoaling trend is thought to reflect upward transition from prodelta to distal and then proximal delta front.’
- ‘Such sediments and ichnofacies suggest lag deposits winnowed in proximal storm-generated beds.’
- ‘Individual deposit thicknesses vary from 20 m in proximal facies, to less than 2 m in distal facies.’
Early 19th century (as a term in anatomy and zoology): from Latin proximus ‘nearest’ + -al. In geology, usage dates from the 1940s.
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