invaginate vs tilt

invaginate

verb
  • To turn or fold inwardly. 

  • To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula. 

  • To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure. 

adj
  • Having one portion of a hollow organ drawn back within another portion. 

  • sheathed 

tilt

verb
  • To slope or incline (something); to slant. 

  • To point or thrust (a weapon). 

  • To intentionally let the ball fall down to the drain by disabling flippers and most targets, done as a punishment to the player when the machine is nudged too violently or frequently. 

  • To play worse than usual (often as a result of previous bad luck or losses). 

  • To charge (at someone) with a lance. 

  • To forge (something) with a tilt hammer. 

  • To be at an angle. 

  • To point or thrust a weapon at. 

  • To cover with a tilt, or awning. 

noun
  • An attempt at something, such as a tilt at public office. 

  • A jousting contest. (countable) 

  • A canvas covering for carts, boats, etc. 

  • Any covering overhead; especially, a tent. 

  • The controlled vertical movement of a camera, or a device to achieve this. 

  • A thrust, as with a lance. 

  • A tilt hammer. 

  • A slope or inclination. 

  • The inclination of part of the body, such as backbone, pelvis, head, etc. 

How often have the words invaginate and tilt occurred in a corpus of books? (source: Google Ngram Viewer )