Transdeletion pyramid

A transdeletion pyramid (also called a transaddition pyramid or word pyramid when inverted) is a logological term for the triangular representation of a list of words in which each one is a scrambled form of the above word without one letter.

This seventeen-letter transdeletion pyramid, made of inferred words in an Unabridged Merriam-Webster dictionary, can be found in Ross Eckler's book Making the Alphabet Dance:

A N T I C E R E M O N I A L I S T N O N M A T E R I A L I T I E S O R N A M E N T A L I T I E S I N T E R L A M I N A T E S M A T E R N A L I T I E S M A T R I L I N E A T E T R I L A M I N A T E T E R M I N A L I A L A T I M E R I A M A T E R I A L T A L I E R A R E T A I L A L T E R R A T E T E A A T A