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jmdict 2451660 Active (id: 2311966)

マイナスイオンマイナス・イオン
1. [n] Source lang: eng(wasei) "minus ion"
▶ (atmospheric) negative ions (supposedly having positive health effects)



History:
9. A 2024-09-09 01:08:34  Jim Breen <...address hidden...>
  Refs:
アニオン	21716	1.6%
陰イオン	31767	2.4%
マイナスイオン	1283628	95.8%
マイナス・イオン	3334	0.2%
  Comments:
The "proper" terms barely get used.
8. A* 2024-09-09 00:45:45  Robin Scott <...address hidden...>
  Comments:
Looks like the JEs are wrong here.
  Diff:
@@ -12 +11,0 @@
-<field>&chem;</field>
@@ -14,5 +13 @@
-<gloss>negative ion</gloss>
-</sense>
-<sense>
-<pos>&n;</pos>
-<gloss>atmospheric negative ions (esp. in pseudoscientific contexts)</gloss>
+<gloss>(atmospheric) negative ions (supposedly having positive health effects)</gloss>
7. A* 2024-09-08 13:38:00 
  Refs:
daijs: 学術用語ではなく
  Comments:
> It gets some use outside 疑似科学.

Does it, really? I looked at 10 google links that had scientific-looking illustrations and the explanations offered on those pages were all bollocks.

プラスイオン cause cell ageing, sore shoulders, cancer, and everything else bad.
6. A* 2024-09-08 02:06:06  Jim Breen <...address hidden...>
  Refs:
プログレッシブ: a negatively charged ion; a negative ion
  Comments:
Maybe this. It gets some use outside 疑似科学.
  Diff:
@@ -14,0 +15,4 @@
+</sense>
+<sense>
+<pos>&n;</pos>
+<gloss>atmospheric negative ions (esp. in pseudoscientific contexts)</gloss>
5. A* 2024-09-08 00:23:59 
  Comments:
That's the point. The word is only used inpseudoscientific context, unlike the english.
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