plural of formation lap

(geology) A sequence of Upper Jurassic sedimentary rock in the western United States, noted as the most fertile source of dinosaur fossils in North America.

(biology, archaic) The formation of several cells from and in the protoplasm of the mother cell.

(obsolete, 18th century, US) A country dance, most often specifically a type of New England line dance.

(aviation) An aerial salute to commemorate a deceased person, consisting of a formation of flying aircraft with a space where one plane should be flying.

plural of missing man formation

(soccer) A formation consisting of four defenders, three central midfielders, two attacking midfielders, and one striker.

plural of Christmas tree formation