a procedure in which a probe that sends out high-energy sound waves is inserted into the rectum. the sound waves are bounced off internal tissues or organs and make echoes. the echoes form a picture of body tissue called a sonogram. erus is used to look for abnormalities in the rectum and nearby structures, including the prostate. also called endorectal ultrasound, transrectal ultrasound, and trus.
出典:Wiktionary
出典:『Wiktionary』 (2025/10/06 01:54 UTC 版)
From Proto-Italic *ezos (“master”), from Proto-Indo-European *h₁esh₂ós (“master”). Cognate with Hittite 𒅖𒄩𒀀𒀸 (“išhāš "master"”).
A connection with heres (“heir”) and hirudo (“leech”) has also been proposed by Charlton Lewis and Charles Short, making its stem instead from Proto-Indo-European *ǵʰeh₁ro- (“derelict”). Cognates would include Ancient Greek χήρα (khḗra, “widow”), Sanskrit हरति (harati, “to seize”) and हरण (haraṇa, “abduction”).
erus m (genitive erī, feminine era); second declension
Second-declension noun.
| singular | plural | |
|---|---|---|
| nominative | erus | erī |
| genitive | erī | erōrum |
| dative | erō | erīs |
| accusative | erum | erōs |
| ablative | erō | erīs |
| vocative | ere | erī |
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wrens
a wrinkle
ぐぐれ
a paste-pot