noun (plural Os or O'sōz)
1.2A human blood type (in the ABO system) lacking both the A and B antigens. In blood transfusion, a person with blood of this group is a potential universal donor.
- Type Os don't find dairy products and grains quite as user friendly as do most of the other blood types.
- The leading factor in weight gain for Type Os is the gluten found in wheat germ and whole wheat products, which interferes with insulin efficiency and slow down metabolic rate.
- There are three alleles or versions of the blood type gene: A, B, and O.
3A shape like that of a capital O; a circle.
- Is there no way to rotate/ flip individual objects independently? e.g., when the O shape is brought into 3D it is in a vertical position.
- Pacing is especially troublesome - round shapes like "O" need less white space on either side than straight shapes like "H," of course, but there's also the question of how much white space the whole font needs.
2 archaic Used before a name in direct address, as in prayers and poetry: give peace in our time, O Lord
More example sentences
- In the Church of England service for Evening Prayer we pray, Give peace in our time, O Lord.
- "Hear my prayer, O LORD, and give ear to my cry; Do not be silent at my tears; For I am a stranger with You, A sojourner like all my fathers."
- O Lord, save thy people.
Natural exclamation: first recorded in Middle English.
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