- Mutt and Jeff
- mutter
- Mutter
- mutton
- muttonbird
- mutton bird
- muttonbirder
- mutton chop
- muttonchops
- mutton corn
- muttonfish
- muttonhead
- mutton snapper
- Muttra
- mutual
- mutual admiration society
- mutual aid
- Mutual Assured Destruction
- mutual fund
- mutual impedance
- mutual inductance
- mutual induction
- mutual insurance
- mutual insurance company
- mutualism
- mutuality
- mutualize
- mutually
- mutually exclusive
- mutual savings bank
- mutuel
- mutule
- muumuu
- muu-muu
- muxe
- Muybridge
- Muzak
- muzhik
- Muzorewa
- Muztag
- Muztagata
- muzz
- muzzle
- muzzleloader
- muzzle-loader
- muzzler
- muzzle velocity
- muzzy
- Muʾmin
- mv
- mV
- Mv
- MV
- MVD
- MVDI
- MVO
- MVP
- MVS
- MVSc
- mw
- mW
- MW
- mwah
- mwalimu
- Mwambutsa IV
- Mwanza
- Mweru
- MWP
- mx
- Mx
- MX
- Mx.
- my
- MY
- my-
- myalgia
- myalgic encephalopathy
- myalism
- myall
- Myanmar
- My Antonia
- myasis
- myasthenia
- myasthenia gravis
- myatonia
- myatrophy
- myc-
- Mycale
- mycelium
- mycella
- Mycenae
- Mycenaean
- Mycerinus
- mycetism
- myceto-
- mycetoma
- mycetophagous
- mycetozoan
- myco-
- mycobacteria
- mycobacterium
- mycobiont
- mycocecidium
- mycoflora
- mycogenous
- mycol.
- mycology
- mycoparasite
- mycophagist
- mycophagous
- mycoplasma
- mycorrhiza
- mycosis
- mycostat
- Mycostatin
- Mycota
- mycotic
- mycotoxicosis
- mycotoxin
- mycotrophic
- mycotrophy
- My country, 'tis of thee
- mycovirus
- mydriasis
- mydriatic
- myel-
- myelencephalon
- myelin
- myelinated
- myelination
- myelin sheath
- myelitis
- myelo-
- myeloblast
- myelocyte
- myelofibrosis
- myelogenic
- myelogram
- myelography
- myeloid
- myeloma
- myelopathy
- Myers
- my eye
- My Fair Lady
- my God
- My God, my God, why hast thou forsaken me?
- my goodness
- my heart bleeds for you
- my heart is full
- myiasis
- Myingyan
- Mykerinos
- Mykolayiv
- Mykonos
- My Lai
- My Lai massacre
- Mylar
- mylohyoid
- mylonite
- my-my
- myna
- mynah
- my name is mud
- Mynes
- Mynheer
- myo-
- myoatrophy
- myoblast
- myocardial
- myocardial infarction
- myocardiogram
- myocardiograph
- myocarditis
- myocardium
- myoclonia
- myoclonus
- myocyte
- myoelectric
- myofibril
- myofilament
- myogenic
- myoglobin
- myogram
- myograph
- myokymia
- myology
- myoma
- myomectomy
- myoneural
- myoneuralgia
- myopathy
- myope
- myophily
- myopia
- myopic
- myoporum
- myopsychopathy
- myoscope
- myosin
- myosis
- myosotis
- myotome
- myotomy
- myotonia
- Myra
- Myrdal
- myria-
- myriad
- myriad-leaf
- myriapod
- myrica
- myringotomy
- myristic acid
- myrmeco-
- myrmecochory
- myrmecology
- myrmecophagous
- myrmecophile
- myrmecophily
- Myrmidon
- Myrna
- myrobalan
- myron
- Myron
- myrrh
- Myrrha
- myrtaceous
- myrtle
- Myrtle
- Myrtle Beach
- myrtle family
- myrtle warbler
- mySAP
- myself
- Mysia
- mysid
- Mysliveček
- mysophilia
- mysophobia
- Mysore
- MySpace
- mystagogue
- mysterious
- mysteriously
- mysteriousness
- mystery
- mystery bag
- mystery play
- mystery tour
- mystic
- Mystic
- mystical
- mystical theology
- mysticete
- mysticism
- mysticize
- mystification
- mystify
- mystique
- Mysuru
- myth
- myth.
- mythical
- mythicize
- mythify
- mythmaker
- mythmaking
- mytho-
- mythoclast
- mythogenic
- mythographer
- mythography
- mythoi
- mythol.
- mythologem
- mythological
- mythologist
- mythologize
- mythology
- mythomane
- mythomania
- mythopoeia
- mythopoeic
- mythopoetize
- mythos
- Mytilene
- Mytishchi
- myx-
- myxameba
- myxasthenia
- myxedema
- myxo
- myxo-
- myxobacteria
- myxoedema
- myxoid
- myxoma
- myxomatosis
- myxomycete
