O (EN)

буква, существительное, частица, собственное имя, символ

буква “O”

1. заглавная форма буквы "о"
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   Olivia wrote her name with a big "O" at the beginning.

существительное “O”

1. группа крови, не имеющая антигенов A или B
   Since she has type O blood, she can only receive donations from others with the same type.
2. сленг для обозначения оргазма
   After months of trying, she finally experienced her first O with her partner.
3. жаргонное название опиума
   He pulled out a small pouch and whispered, "Got some O if you're looking to relax."

частица “O”

1. о (в обращении)
   O Captain! My Captain! Our fearful trip is done.

собственное имя “O”

1. О (фамилия)
   Mrs. O, originally from Seoul, is known for her delicious kimchi recipe.

символ “O”

1. символ кислорода
   Water is composed of two hydrogen atoms and one oxygen atom, represented chemically as H2O.
2. O (асимптотическая оценка)
   In algorithm analysis, if we say a sorting algorithm is O(n log n), it means its time complexity will not grow faster than n log n times some constant, for large enough n.
3. O (ортогональная группа)
   In our study of symmetries, we learned that the set of rotations and reflections of a square forms an orthogonal group, denoted as O(2).