poli
poli — 名詞
1. a prefix-like element used in medical words to mean 'gray', especially when talk
灰質
指腦或脊髓的灰色組織
a prefix-like element used in medical words to mean 'gray', especially when talking about the gray tissue inside the brain and spinal cord
Dr. Folake pointed at gray spots on the scan. 'That is poliomyelitis — polio means gray,' she told the intern.
Folake 醫師指著掃描片上的灰色斑點說：「那是 poliomyelitis（脊髓灰質炎）——polio 就是灰的意思。」她告訴實習醫生。
compound: poliomyelitis explained in a diagnostic scene
Poliosis is a medical term for patches of white or gray hair caused by lack of pigment.
Poliosis（灰髮症）是醫學名詞，指因缺乏色素而出現的一塊塊白髮或灰髮。
compound: poliosis means gray condition
Mei could not move her legs, so Dr. Hana tested her for poliomyelitis — a virus that attacks gray matter.
Mei 雙腿無法動彈，所以 Hana 醫師為她檢測是否感染了 poliomyelitis（脊髓灰質炎）——一種攻擊灰質的病毒。
Dr. Walid showed the trainee the MRI scan and pointed at a gray area. 'This patient has poliencephalitis,' he said.
Walid 醫師指著 MRI 掃描片上的灰色區域，對實習醫生說：「這位病人得了 poliencephalitis（腦灰質炎）。」
用法筆記
Only appears as part of compound medical terms. Never used as a standalone English word. The form 'polio-' is more common than 'poli-' before a consonant.
常見錯誤
2. a word part that refers to the color gray, used mostly in medical and scientific
灰
指灰色，用於醫學科學詞彙
a word part that refers to the color gray, used mostly in medical and scientific terms describing gray-colored tissues or conditions
Dr. Beatrix showed students a slide of stained nerve cells. 'The gray color gave poliovirus its name,' she said.
Beatrix 醫師讓學生看染色的神經細胞玻片，說：「灰色的外觀給了 poliovirus（小兒麻痺病毒）這個名稱。」
combining form: polio- = gray, shown in lab context
Dr. James pointed at the MRI. 'Gray spots in the cord — that is why doctors call this poliomyelitis.'
James 醫師指著 MRI 說：「脊髓中的灰色斑點——那就是醫生稱此病為 poliomyelitis（脊髓灰質炎）的原因。」
When Takeshi's grandmother noticed a gray patch in her hair, the doctor examined it and said it was poliosis.
Takeshi 的奶奶在頭髮上發現一塊灰斑，醫生檢查後說那是 poliosis（灰髮症）。
Dr. Diya showed her students the gray cells under the microscope. 'Polio- means gray,' she said.
Diya 醫師讓學生看顯微鏡下的灰色細胞，說：「Polio- 就是灰的意思。」
用法筆記
Both 'poli-' and 'polio-' are variant forms of the same Greek-derived combining element. 'Polio-' is more common in modern medical English.