Inflections of helicopter operation [n.]
| sing. | helicopter operation |
| plur. | helicopter operations |
Words with the same pattern :
compulsory education quinoxalin troll pawn glaive jet pump inthronization Glisson's rule computer centre election judge military buildup first-timer nut cutlet figurehead summit camp aleuriospore assailer tentative contract transparence neep ... (105059 mots)