Loading
Noun
A
quark
having
a
fractional
electric charge
of
<
math
>+\
frac
{
2
}{
3
}math
>
and
a
mass
of
about
1
.
5
to
4
MeV
.<
br
>
Symbol
: <
math
>
u
math
>
Made with ♥ by Homo Sapiens on Planet Earth

Rejected by Y-Combinator. Definitions by Wiktionary.

Unlock more features

♥    Add words to your likes

🧑🏽‍💻    Your own @account

👨‍👩‍👧‍👧    Follow friends

💬    Notifications when your         friends like a word

🧠