pentalpha means A pentagram. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “pentalpha” is a great word
PENTALPHA — [Noun] A pentagram, specifically one perceived as being formed by five interlocking capital letter alphas (Α). From Ancient Greek πένταλφα (péntalpha), from πέντε (pénte, "five") and ἄλφα (álpha, "alpha"), literally meaning "five alphas"; first recorded in English use 1810–20. Unlike "pentagram" (a general geometric term for a five-pointed star) or "pentacle" (which implies a magical talisman enclosed in a circle), "pentalpha" is the scholar's term, coolly descriptive of its imagined construction from five interlaced As. It is the ghost of an alphabet haunting geometry: five angular limbs locked in a perpetual, recursive knot; the stark shadow a star casts on a dusty manuscript page; the precise, interlaced cage the mind constructs when told to see five "A"s at once. It is form contemplating its own origin.