IPA: /ˈæl.aɪʌndeɪ/
KK: /ɑːˈlaɪʊndeɪ/
From a different place or source; not from the current location.
The evidence was obtained aliunde, which strengthened the case.
Aliunde is derived from the Latin "alius" (meaning other) and "unde" (meaning whence or from where). The word refers to something that comes from another source or place.
Think of 'other' ('alius') and 'from where' ('unde') to remember that 'aliunde' means from another source.