A
noun
Key Types & categories Parts & wholes Related & opposite
- Word type
- noun
- verb
- adjective
- adverb
- Line style
- core relation
- instance, member or derived
- substance, domain or see-also
- Direction
- arrow points to the broader concept
- dashed outline: no word in this language
- Click any word to expand it.
Senses
Sense 1 noun
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
Types & categories
- metric linear unit hypernym
Parts & wholes
Sense 2 noun
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
Types & categories
- fat-soluble vitamin hypernym
- vitamin A1 hyponym
- vitamin A2 hyponym
Sense 3 noun
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
Types & categories
- nucleotide hypernym
Sense 4 noun
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
Types & categories
- purine hypernym
Parts & wholes
- deoxyribonucleic acid substance holonym
- ribonucleic acid substance holonym
Related & opposite
- biochemistry domain topic
Sense 5 noun
the basic unit of electric current adopted under the Systeme International d'Unites
a typical household circuit carries 15 to 50 amps
Types & categories
- current unit hypernym
Parts & wholes
- abampere part holonym
- milliampere part meronym
Sense 6 noun
the 1st letter of the Roman alphabet
Types & categories
- letter of the alphabet hypernym
Parts & wholes
- Roman alphabet member holonym
Sense 7 noun
the blood group whose red cells carry the A antigen
Types & categories
- blood group hypernym
Table view of this graph
| Sense | Relation | Group | Word |
|---|---|---|---|
| 1 | part holonym | Parts & wholes | nanometer |
| 1 | part meronym | Parts & wholes | picometer |
| 1 | hypernym | Types & categories | metric linear unit |
| 2 | hypernym | Types & categories | fat-soluble vitamin |
| 2 | hyponym | Types & categories | vitamin A1 |
| 2 | hyponym | Types & categories | vitamin A2 |
| 3 | hypernym | Types & categories | nucleotide |
| 4 | domain topic | Related & opposite | biochemistry |
| 4 | substance holonym | Parts & wholes | deoxyribonucleic acid |
| 4 | substance holonym | Parts & wholes | ribonucleic acid |
| 4 | hypernym | Types & categories | purine |
| 5 | part holonym | Parts & wholes | abampere |
| 5 | part meronym | Parts & wholes | milliampere |
| 5 | hypernym | Types & categories | current unit |
| 6 | member holonym | Parts & wholes | Roman alphabet |
| 6 | hypernym | Types & categories | letter of the alphabet |
| 7 | hypernym | Types & categories | blood group |