sis

Plural: sises, sisses

Noun

• A familiar, shortened term for a sister.
• a female person who has the same parents as another person
  • "my sister married a musician"
• a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
• a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela)
• the syllable naming the seventh (subtonic) note of any musical scale in solmization
• Clipping of sister.

Examples

• big sis
• My Words With Friends opponent played SIS, reminding me of our friendly sibling rivalry.

Synonyms

atomic number 14, International System, International System of Units, Si, si, SI, SI system, SI unit, silicon, sister, Systeme International, Systeme International d'Unites, te, ti, sissy

Antonyms

brother

Related Words

sis boom bah