apheresis
/æfəˈriːsɪs/noun
mass noun
1
- Linguistics omission of the initial sound of a word, as when he is is pronounced he's【语言学】词首音脱落。
2
- Medicine a technique by which a particular substance or component is removed from the blood, the main volume being returned to the body【医】单采血液成分法, 提取法, 分离性输血。
词源
mid 16th cent.: via late Latin from Greek aphairesis, from aphairein 'take away'， from apo 'from' + hairein 'take'.