One of the mysteries of the English language finally explained.
nounPlural umbilicuses, Plural umbilici
- ‘The incision is made either horizontally just above the pubic bone (around the top of a bikini line) or vertically from just below the umbilicus (belly button) down to the pubic bone.’
- ‘A 22-gauge needle can be inserted in a Z-tract fashion, to minimize leakage of fluid after the paracentesis, in midline between the umbilicus and the pubis symphysis in order to avoid collateral vessels.’
- ‘Conventional colorectal surgery was performed through a vertical midline incision that extended from 5 cm to 10 cm above the umbilicus to the mons pubis.’
- ‘The normal umbilicus is symmetrically indented into the abdominal wall, though it may be nearly flat in very slender people.’
- ‘He has a palpable ‘olive’ above the umbilicus near midline and he is severely dehydrated.’
A depression or hole at the centre of the shell whorls of some gastropod molluscs and many ammonites.
- ‘A coiled conch develops a closed umbilicus only when certain very limited conditions are fulfilled, thus permitting only very limited degrees of freedom.’
- ‘Such a high value can only be realized in conchs with very low WER and a small umbilicus.’
- ‘Only in conch thickness do they show a relatively wide variability, ranging from pachyconic conchs with moderately wide umbilici to extremely slender, oxyconic conchs with closed umbilici.’
- ‘Paosia differs from the enigmatic and poorly defined Pterodonta by having a much less globose adult last whorl, lower spire, anterior end of outer lip projected and incurved, a more sinuous growth line, and in lacking an umbilicus.’
- ‘One side of the shell is nearly flat, and the opposite side is concave because of the wide umbilicus.’
- 2.1 A hole at each end of the hollow shaft of a feather.
- ‘The main feather may have an afterfeather attached to it, arising from the underside of the feather at the superior umbilicus.’
Late 17th century: from Latin: related to Greek omphalos, also to navel.
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