| Termen/ Term | Nr. apariții/ No. occurrences |
| MARGINAR-DE-LUNCA | 1 |
| MARMOTA | 3 |
| MARMOTA DE PADURE | 1 |
| MARMOTA VEVERITA | 1 |
| MARMOZETA COMUNA | 1 |
| MARMOZETA ROZ | 1 |
| MARTIN CU TREI DEGETE | 1 |
| MARTIN-CU-TREI-DEGETE | 1 |
| MARTIN=CU=TREI=DEGETE | 1 |
| MASEA | 1 |
| MASEAUA CIUTEI | 1 |
| MASELARITA | 6 |
| MASTODON | 55 |
| MASTODONT | 1 |
| MATASAR | 19 |
| MATRAGUNA | 7 |
| MAZARICAE | 1 |
| MAZARICHE | 26 |
| MAZAROI | 1 |
| MEDREPORAR | 2 |
| MEDUZA | 16 |
| MEDUZA DE APA CALDA | 1 |
| MEDUZA RIZOSTOMA | 2 |
| MELC | 424 |
| MELC DE APA DULCE | 56 |
| MELC DE APA DULCE SI SALMASTRA | 2 |
| MELC DE LAGUNA | 1 |
| MELC MARIN | 1,098 |
| MELC MARINA | 3 |
| MELC MATIN | 1 |
| MELC PATELID | 1 |
| MELC TERESTRU | 343 |
| MELC TERESTU | 4 |
| MELCI | 240 |
| MELCUL DE GRADINA | 3 |
| MELIFAGID AFRICAN | 1 |
| MELIFAGID AUSTRALIAN | 2 |
| MENINGEA LA OMUL BOLNAV DE DALAC | 1 |
| MERINANA | 2 |
| MERISOR | 1 |
| MERISOR DE MUNTE | 3 |
| MERU | 1 |
| MESELARITA | 1 |
| MESTEACAN | 6 |
| METACARPIAN DREPT | 4 |
| METAMORFOZA | 1 |
| METATARSIAN | 6 |
| METATARSIAN FRAGMENT | 1 |
| METATARSIAN STING | 7 |
| METEORIT | 189 |