strangeˈness noun

1. The quality of being strange
2. A property of certain elementary particles, conserved in strong but not in weak interactions and represented by a quantum number (strangeness number) equal to the particle's hypercharge number minus its baryon number (physics)

strānˈger noun

1. A foreigner
2. A person whose home is elsewhere
3. A person unknown or little known
4. A person who is outside one's familiar circle or kindred
5. A visitor
6. A new-born child (humorous)
7. A non-member
8. An outsider
9. A person not concerned
10. A person without knowledge, experience, or familiarity (with to)

To make a stranger

strange attractor noun (mathematics)

An orderly but non-repeating pattern within a chaotic system

strange matter noun (physics)

A hypothetical form of matter composed of up, down and strange quarks

strangeness number see strangeness above.

strange particles plural noun

Kaons and hyperons, which have a non-zero strangeness number (qv above)

strange quark noun (physics)

One of six categories of quark, having a charge of −1/3, spin of 1/2 and mass of 195

strangers' gallery noun

A public gallery, esp in the House of Commons

make it strange (Shakespeare)

To make difficulties, show reluctance