theorize or theorise/ʹthiəriez, ʹthee·əriez/ -ise verb intrans

• quarter note
• quarter plate
• quarter-pounder
• quarter sessions
• quarterstaff
• quarter tone
• quartet
• quartic
• quartile
• quarto
• quartz
• quartz glass
• quartzite
• quasar
• quash
• quasi-
• quasi-stellar object
• quassia
• quatercentenary
• quaternary
• quaternion
• quatrain
• quatrefoil
• quattrocento
• quaver