2es·ti·mate 
/ˈɛstəˌmeɪt/ verb
es·ti·mates; es·ti·mat·ed; es·ti·mat·ing /ˈɛstəˌmeɪt/ verb [+ obj] : to give or form a general idea about the value, size, or cost of (something) : to make an estimate of (something)
▪ They estimated the distance at/as about three miles. ▪ We need to estimate how much paint we'll need for the job. ▪ The cost of the project has been estimated at/as about 10 million dollars. ▪ He estimates that current oil reserves are 20 percent lower than they were a year ago. ▪ Damage from the hurricane is estimated (to be) in the billions of dollars.
▪ They estimated the distance at/as about three miles. ▪ We need to estimate how much paint we'll need for the job. ▪ The cost of the project has been estimated at/as about 10 million dollars. ▪ He estimates that current oil reserves are 20 percent lower than they were a year ago. ▪ Damage from the hurricane is estimated (to be) in the billions of dollars.
— estimated adjective
▪ An estimated 50,000 people were in attendance.
▪ An estimated 50,000 people were in attendance.
— es·ti·ma·tor /ˈɛstəˌmeɪtɚ/ noun, plural es·ti·ma·tors [count]
/ˈɛstəˌmeɪtɚ/ noun, plural es·ti·ma·tors [count]
