The word is in the Wiktionary

1 short excerpt of Wiktionnary (A collaborative project to produce a free-content dictionary.)

— English word —

• arithmetical␣hierarchy n. (Logic) A hierarchy which classifies the complexity of first-order formulae (and sets defined by them)…

14 English words from the English definition

and classifies complexity defined first first-order formulae hierarchy Logic order sets the them which

56 words-in-word (Words found as is inside the word. Minimum size 3 letters.)

arc Arc ARC arc- arch Arch ARCH -arch arch- arch. archy Archy -archy Ari ARI arithmetic arithmetical cal Cal cal. Cal. era ERA ETI etic -etic hie hierarch hierarchy ICA -ica -ical -ier ith i'th' ithm met Met MET met- met. METI metic metica metical rar RAR RCH rit rith 'rithmetic THM tic TIC -tic tical

31 words-in-word RTL (Words found written from right to left, inside the word. Minimum size 3 letters.)

ACI are Are ARE Åre A.R.E. cit cit. cite CRA crare HCR HLA IHL Ira IRA ITE -ite item lac Lac LAc LAC Laci rar RAR rare rei TEM Tir TIR

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