lacto

See also: lactó and lacto-

Latin

Etymology 1

From lac +‎ -ō.

Verb

lactō (present infinitive lactāre, perfect active lactāvī, supine lactātum); first conjugation

2. I contain or give milk, suckle.
3. I suck milk from the breast.
4. I am full of milk

Conjugation

Conjugation of lactō (first conjugation)
indicative		singular			plural
		first	second	third	first	second	third
active	present	lactō	lactās	lactat	lactāmus	lactātis	lactant
	imperfect	lactābam	lactābās	lactābat	lactābāmus	lactābātis	lactābant
	future	lactābō	lactābis	lactābit	lactābimus	lactābitis	lactābunt
	perfect	lactāvī	lactāvistī	lactāvit	lactāvimus	lactāvistis	lactāvērunt, lactāvēre
	pluperfect	lactāveram	lactāverās	lactāverat	lactāverāmus	lactāverātis	lactāverant
	future perfect	lactāverō	lactāveris	lactāverit	lactāverimus	lactāveritis	lactāverint
passive	present	lactor	lactāris, lactāre	lactātur	lactāmur	lactāminī	lactantur
	imperfect	lactābar	lactābāris, lactābāre	lactābātur	lactābāmur	lactābāminī	lactābantur
	future	lactābor	lactāberis, lactābere	lactābitur	lactābimur	lactābiminī	lactābuntur
	perfect	lactātus + present active indicative of sum
	pluperfect	lactātus + imperfect active indicative of sum
	future perfect	lactātus + future active indicative of sum
subjunctive		singular			plural
		first	second	third	first	second	third
active	present	lactem	lactēs	lactet	lactēmus	lactētis	lactent
	imperfect	lactārem	lactārēs	lactāret	lactārēmus	lactārētis	lactārent
	perfect	lactāverim	lactāverīs	lactāverit	lactāverīmus	lactāverītis	lactāverint
	pluperfect	lactāvissem	lactāvissēs	lactāvisset	lactāvissēmus	lactāvissētis	lactāvissent
passive	present	lacter	lactēris, lactēre	lactētur	lactēmur	lactēminī	lactentur
	imperfect	lactārer	lactārēris, lactārēre	lactārētur	lactārēmur	lactārēminī	lactārentur
	perfect	lactātus + present active subjunctive of sum
	pluperfect	lactātus + imperfect active subjunctive of sum
imperative		singular			plural
		first	second	third	first	second	third
active	present	—	lactā	—	—	lactāte	—
	future	—	lactātō	lactātō	—	lactātōte	lactantō
passive	present	—	lactāre	—	—	lactāminī	—
	future	—	lactātor	lactātor	—	—	lactantor
non-finite forms		active			passive
		present	perfect	future	present	perfect	future
infinitives		lactāre	lactāvisse	lactātūrum esse	lactārī	lactātum esse	lactātum īrī
participles		lactāns	—	lactātūrus	—	lactātus	lactandus
verbal nouns		gerund				supine
		genitive	dative	accusative	ablative	accusative	ablative
		lactandī	lactandō	lactandum	lactandō	lactātum	lactātū

Related terms

• lac
• lactāneus
• lactāris
• lactārius
• lactātum

• lacteō
• lacteolus
• lactesco
• lacteus
• lacticīnium

• lactifer
• lactineus
• lactoris
• lactūca
• lactūcārius

Descendants

• English: lactate
• French: lacter
• Friulian: latâ
• Italian: lattare
• Spanish: lactar

Etymology 2

From laciō (“entice, allure”) +‎ -tō

Verb

lactō (present infinitive lactāre, perfect active lactāvī, supine lactātum); first conjugation

2. I wheedle, flatter, deceive with flattery.

Conjugation

Conjugation of lactō (first conjugation)
indicative		singular			plural
		first	second	third	first	second	third
active	present	lactō	lactās	lactat	lactāmus	lactātis	lactant
	imperfect	lactābam	lactābās	lactābat	lactābāmus	lactābātis	lactābant
	future	lactābō	lactābis	lactābit	lactābimus	lactābitis	lactābunt
	perfect	lactāvī	lactāvistī	lactāvit	lactāvimus	lactāvistis	lactāvērunt, lactāvēre
	pluperfect	lactāveram	lactāverās	lactāverat	lactāverāmus	lactāverātis	lactāverant
	future perfect	lactāverō	lactāveris	lactāverit	lactāverimus	lactāveritis	lactāverint
passive	present	lactor	lactāris, lactāre	lactātur	lactāmur	lactāminī	lactantur
	imperfect	lactābar	lactābāris, lactābāre	lactābātur	lactābāmur	lactābāminī	lactābantur
	future	lactābor	lactāberis, lactābere	lactābitur	lactābimur	lactābiminī	lactābuntur
	perfect	lactātus + present active indicative of sum
	pluperfect	lactātus + imperfect active indicative of sum
	future perfect	lactātus + future active indicative of sum
subjunctive		singular			plural
		first	second	third	first	second	third
active	present	lactem	lactēs	lactet	lactēmus	lactētis	lactent
	imperfect	lactārem	lactārēs	lactāret	lactārēmus	lactārētis	lactārent
	perfect	lactāverim	lactāverīs	lactāverit	lactāverīmus	lactāverītis	lactāverint
	pluperfect	lactāvissem	lactāvissēs	lactāvisset	lactāvissēmus	lactāvissētis	lactāvissent
passive	present	lacter	lactēris, lactēre	lactētur	lactēmur	lactēminī	lactentur
	imperfect	lactārer	lactārēris, lactārēre	lactārētur	lactārēmur	lactārēminī	lactārentur
	perfect	lactātus + present active subjunctive of sum
	pluperfect	lactātus + imperfect active subjunctive of sum
imperative		singular			plural
		first	second	third	first	second	third
active	present	—	lactā	—	—	lactāte	—
	future	—	lactātō	lactātō	—	lactātōte	lactantō
passive	present	—	lactāre	—	—	lactāminī	—
	future	—	lactātor	lactātor	—	—	lactantor
non-finite forms		active			passive
		present	perfect	future	present	perfect	future
infinitives		lactāre	lactāvisse	lactātūrum esse	lactārī	lactātum esse	lactātum īrī
participles		lactāns	—	lactātūrus	—	lactātus	lactandus
verbal nouns		gerund				supine
		genitive	dative	accusative	ablative	accusative	ablative
		lactandī	lactandō	lactandum	lactandō	lactātum	lactātū

References

• “lacto”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “lacto”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• lacto in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.

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Spanish

Verb

lacto

1. First-person singular (yo) present indicative form of lactar.