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| diatomic oxygen | |||
| E 948; oxygen | |||
| oxygen A gaseous chemical element; an essential element in cellular respiration and in combustion processes; the most abundant element in the earth's crust and about 20% of the air by volume | |||
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oxygen : 19 צירופים, 7 נושאים |
| טֶכנוֹלוֹגִיָה | 1 |
| כִּימִיָה | 3 |
| מֵטַלוּרגִיָה | 6 |
| מדעי כדור הארץ | 2 |
| מכשירי חשמל | 3 |
| סביבה | 2 |
| תַחְבּוּרָה | 2 |